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qemu/include/hw/misc/bcm2835_cprman_internals.h

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hw/arm/raspi: add a skeleton implementation of the CPRMAN The BCM2835 CPRMAN is the clock manager of the SoC. It is composed of a main oscillator, and several sub-components (PLLs, multiplexers, ...) to generate the BCM2835 clock tree. This commit adds a skeleton of the CPRMAN, with a dummy register read/write implementation. It embeds the main oscillator (xosc) from which all the clocks will be derived. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:49 +03:00
/*
* BCM2835 CPRMAN clock manager
*
* Copyright (c) 2020 Luc Michel <luc@lmichel.fr>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef HW_MISC_CPRMAN_INTERNALS_H
#define HW_MISC_CPRMAN_INTERNALS_H
#include "hw/registerfields.h"
#include "hw/misc/bcm2835_cprman.h"
hw/misc/bcm2835_cprman: add a PLL skeleton implementation There are 5 PLLs in the CPRMAN, namely PLL A, C, D, H and B. All of them take the xosc clock as input and produce a new clock. This commit adds a skeleton implementation for the PLLs as sub-devices of the CPRMAN. The PLLs are instantiated and connected internally to the main oscillator. Each PLL has 6 registers : CM, A2W_CTRL, A2W_ANA[0,1,2,3], A2W_FRAC. A write to any of them triggers a call to the (not yet implemented) pll_update function. If the main oscillator changes frequency, an update is also triggered. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:50 +03:00
#define TYPE_CPRMAN_PLL "bcm2835-cprman-pll"
hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation PLLs are composed of multiple channels. Each channel outputs one clock signal. They are modeled as one device taking the PLL generated clock as input, and outputting a new clock. A channel shares the CM register with its parent PLL, and has its own A2W_CTRL register. A write to the CM register will trigger an update of the PLL and all its channels, while a write to an A2W_CTRL channel register will update the required channel only. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:52 +03:00
#define TYPE_CPRMAN_PLL_CHANNEL "bcm2835-cprman-pll-channel"
hw/misc/bcm2835_cprman: add a clock mux skeleton implementation The clock multiplexers are the last clock stage in the CPRMAN. Each mux outputs one clock signal that goes out of the CPRMAN to the SoC peripherals. Each mux has at most 10 sources. The sources 0 to 3 are common to all muxes. They are: 0. ground (no clock signal) 1. the main oscillator (xosc) 2. "test debug 0" clock 3. "test debug 1" clock Test debug 0 and 1 are actual clock muxes that can be used as sources to other muxes (for debug purpose). Sources 4 to 9 are mux specific and can be unpopulated (grounded). Those sources are fed by the PLL channels outputs. One corner case exists for DSI0E and DSI0P muxes. They have their source number 4 connected to an intermediate multiplexer that can select between PLLA-DSI0 and PLLD-DSI0 channel. This multiplexer is called DSI0HSCK and is not a clock mux as such. It is really a simple mux from the hardware point of view (see https://elinux.org/The_Undocumented_Pi). This mux is not implemented in this commit. Note that there is some muxes for which sources are unknown (because of a lack of documentation). For those cases all the sources are connected to ground in this implementation. Each clock mux output is exported by the CPRMAN at the qdev level, adding the suffix '-out' to the mux name to form the output clock name. (E.g. the 'uart' mux sees its output exported as 'uart-out' at the CPRMAN level.) Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:54 +03:00
#define TYPE_CPRMAN_CLOCK_MUX "bcm2835-cprman-clock-mux"
hw/misc/bcm2835_cprman: add the DSI0HSCK multiplexer This simple mux sits between the PLL channels and the DSI0E and DSI0P clock muxes. This mux selects between PLLA-DSI0 and PLLD-DSI0 channel and outputs the selected signal to source number 4 of DSI0E/P clock muxes. It is controlled by the cm_dsi0hsck register. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:56 +03:00
#define TYPE_CPRMAN_DSI0HSCK_MUX "bcm2835-cprman-dsi0hsck-mux"
hw/misc/bcm2835_cprman: add a PLL skeleton implementation There are 5 PLLs in the CPRMAN, namely PLL A, C, D, H and B. All of them take the xosc clock as input and produce a new clock. This commit adds a skeleton implementation for the PLLs as sub-devices of the CPRMAN. The PLLs are instantiated and connected internally to the main oscillator. Each PLL has 6 registers : CM, A2W_CTRL, A2W_ANA[0,1,2,3], A2W_FRAC. A write to any of them triggers a call to the (not yet implemented) pll_update function. If the main oscillator changes frequency, an update is also triggered. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:50 +03:00
DECLARE_INSTANCE_CHECKER(CprmanPllState, CPRMAN_PLL,
TYPE_CPRMAN_PLL)
hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation PLLs are composed of multiple channels. Each channel outputs one clock signal. They are modeled as one device taking the PLL generated clock as input, and outputting a new clock. A channel shares the CM register with its parent PLL, and has its own A2W_CTRL register. A write to the CM register will trigger an update of the PLL and all its channels, while a write to an A2W_CTRL channel register will update the required channel only. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:52 +03:00
DECLARE_INSTANCE_CHECKER(CprmanPllChannelState, CPRMAN_PLL_CHANNEL,
TYPE_CPRMAN_PLL_CHANNEL)
hw/misc/bcm2835_cprman: add a clock mux skeleton implementation The clock multiplexers are the last clock stage in the CPRMAN. Each mux outputs one clock signal that goes out of the CPRMAN to the SoC peripherals. Each mux has at most 10 sources. The sources 0 to 3 are common to all muxes. They are: 0. ground (no clock signal) 1. the main oscillator (xosc) 2. "test debug 0" clock 3. "test debug 1" clock Test debug 0 and 1 are actual clock muxes that can be used as sources to other muxes (for debug purpose). Sources 4 to 9 are mux specific and can be unpopulated (grounded). Those sources are fed by the PLL channels outputs. One corner case exists for DSI0E and DSI0P muxes. They have their source number 4 connected to an intermediate multiplexer that can select between PLLA-DSI0 and PLLD-DSI0 channel. This multiplexer is called DSI0HSCK and is not a clock mux as such. It is really a simple mux from the hardware point of view (see https://elinux.org/The_Undocumented_Pi). This mux is not implemented in this commit. Note that there is some muxes for which sources are unknown (because of a lack of documentation). For those cases all the sources are connected to ground in this implementation. Each clock mux output is exported by the CPRMAN at the qdev level, adding the suffix '-out' to the mux name to form the output clock name. (E.g. the 'uart' mux sees its output exported as 'uart-out' at the CPRMAN level.) Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:54 +03:00
DECLARE_INSTANCE_CHECKER(CprmanClockMuxState, CPRMAN_CLOCK_MUX,
TYPE_CPRMAN_CLOCK_MUX)
hw/misc/bcm2835_cprman: add the DSI0HSCK multiplexer This simple mux sits between the PLL channels and the DSI0E and DSI0P clock muxes. This mux selects between PLLA-DSI0 and PLLD-DSI0 channel and outputs the selected signal to source number 4 of DSI0E/P clock muxes. It is controlled by the cm_dsi0hsck register. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:56 +03:00
DECLARE_INSTANCE_CHECKER(CprmanDsi0HsckMuxState, CPRMAN_DSI0HSCK_MUX,
TYPE_CPRMAN_DSI0HSCK_MUX)
hw/misc/bcm2835_cprman: add a PLL skeleton implementation There are 5 PLLs in the CPRMAN, namely PLL A, C, D, H and B. All of them take the xosc clock as input and produce a new clock. This commit adds a skeleton implementation for the PLLs as sub-devices of the CPRMAN. The PLLs are instantiated and connected internally to the main oscillator. Each PLL has 6 registers : CM, A2W_CTRL, A2W_ANA[0,1,2,3], A2W_FRAC. A write to any of them triggers a call to the (not yet implemented) pll_update function. If the main oscillator changes frequency, an update is also triggered. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:50 +03:00
hw/arm/raspi: add a skeleton implementation of the CPRMAN The BCM2835 CPRMAN is the clock manager of the SoC. It is composed of a main oscillator, and several sub-components (PLLs, multiplexers, ...) to generate the BCM2835 clock tree. This commit adds a skeleton of the CPRMAN, with a dummy register read/write implementation. It embeds the main oscillator (xosc) from which all the clocks will be derived. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:49 +03:00
/* Register map */
hw/misc/bcm2835_cprman: add a PLL skeleton implementation There are 5 PLLs in the CPRMAN, namely PLL A, C, D, H and B. All of them take the xosc clock as input and produce a new clock. This commit adds a skeleton implementation for the PLLs as sub-devices of the CPRMAN. The PLLs are instantiated and connected internally to the main oscillator. Each PLL has 6 registers : CM, A2W_CTRL, A2W_ANA[0,1,2,3], A2W_FRAC. A write to any of them triggers a call to the (not yet implemented) pll_update function. If the main oscillator changes frequency, an update is also triggered. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:50 +03:00
/* PLLs */
REG32(CM_PLLA, 0x104)
FIELD(CM_PLLA, LOADDSI0, 0, 1)
FIELD(CM_PLLA, HOLDDSI0, 1, 1)
FIELD(CM_PLLA, LOADCCP2, 2, 1)
FIELD(CM_PLLA, HOLDCCP2, 3, 1)
FIELD(CM_PLLA, LOADCORE, 4, 1)
FIELD(CM_PLLA, HOLDCORE, 5, 1)
FIELD(CM_PLLA, LOADPER, 6, 1)
FIELD(CM_PLLA, HOLDPER, 7, 1)
FIELD(CM_PLLx, ANARST, 8, 1)
REG32(CM_PLLC, 0x108)
FIELD(CM_PLLC, LOADCORE0, 0, 1)
FIELD(CM_PLLC, HOLDCORE0, 1, 1)
FIELD(CM_PLLC, LOADCORE1, 2, 1)
FIELD(CM_PLLC, HOLDCORE1, 3, 1)
FIELD(CM_PLLC, LOADCORE2, 4, 1)
FIELD(CM_PLLC, HOLDCORE2, 5, 1)
FIELD(CM_PLLC, LOADPER, 6, 1)
FIELD(CM_PLLC, HOLDPER, 7, 1)
REG32(CM_PLLD, 0x10c)
FIELD(CM_PLLD, LOADDSI0, 0, 1)
FIELD(CM_PLLD, HOLDDSI0, 1, 1)
FIELD(CM_PLLD, LOADDSI1, 2, 1)
FIELD(CM_PLLD, HOLDDSI1, 3, 1)
FIELD(CM_PLLD, LOADCORE, 4, 1)
FIELD(CM_PLLD, HOLDCORE, 5, 1)
FIELD(CM_PLLD, LOADPER, 6, 1)
FIELD(CM_PLLD, HOLDPER, 7, 1)
REG32(CM_PLLH, 0x110)
FIELD(CM_PLLH, LOADPIX, 0, 1)
FIELD(CM_PLLH, LOADAUX, 1, 1)
FIELD(CM_PLLH, LOADRCAL, 2, 1)
REG32(CM_PLLB, 0x170)
FIELD(CM_PLLB, LOADARM, 0, 1)
FIELD(CM_PLLB, HOLDARM, 1, 1)
REG32(A2W_PLLA_CTRL, 0x1100)
FIELD(A2W_PLLx_CTRL, NDIV, 0, 10)
FIELD(A2W_PLLx_CTRL, PDIV, 12, 3)
FIELD(A2W_PLLx_CTRL, PWRDN, 16, 1)
FIELD(A2W_PLLx_CTRL, PRST_DISABLE, 17, 1)
REG32(A2W_PLLC_CTRL, 0x1120)
REG32(A2W_PLLD_CTRL, 0x1140)
REG32(A2W_PLLH_CTRL, 0x1160)
REG32(A2W_PLLB_CTRL, 0x11e0)
REG32(A2W_PLLA_ANA0, 0x1010)
REG32(A2W_PLLA_ANA1, 0x1014)
FIELD(A2W_PLLx_ANA1, FB_PREDIV, 14, 1)
REG32(A2W_PLLA_ANA2, 0x1018)
REG32(A2W_PLLA_ANA3, 0x101c)
REG32(A2W_PLLC_ANA0, 0x1030)
REG32(A2W_PLLC_ANA1, 0x1034)
REG32(A2W_PLLC_ANA2, 0x1038)
REG32(A2W_PLLC_ANA3, 0x103c)
REG32(A2W_PLLD_ANA0, 0x1050)
REG32(A2W_PLLD_ANA1, 0x1054)
REG32(A2W_PLLD_ANA2, 0x1058)
REG32(A2W_PLLD_ANA3, 0x105c)
REG32(A2W_PLLH_ANA0, 0x1070)
REG32(A2W_PLLH_ANA1, 0x1074)
FIELD(A2W_PLLH_ANA1, FB_PREDIV, 11, 1)
REG32(A2W_PLLH_ANA2, 0x1078)
REG32(A2W_PLLH_ANA3, 0x107c)
REG32(A2W_PLLB_ANA0, 0x10f0)
REG32(A2W_PLLB_ANA1, 0x10f4)
REG32(A2W_PLLB_ANA2, 0x10f8)
REG32(A2W_PLLB_ANA3, 0x10fc)
REG32(A2W_PLLA_FRAC, 0x1200)
FIELD(A2W_PLLx_FRAC, FRAC, 0, 20)
REG32(A2W_PLLC_FRAC, 0x1220)
REG32(A2W_PLLD_FRAC, 0x1240)
REG32(A2W_PLLH_FRAC, 0x1260)
REG32(A2W_PLLB_FRAC, 0x12e0)
hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation PLLs are composed of multiple channels. Each channel outputs one clock signal. They are modeled as one device taking the PLL generated clock as input, and outputting a new clock. A channel shares the CM register with its parent PLL, and has its own A2W_CTRL register. A write to the CM register will trigger an update of the PLL and all its channels, while a write to an A2W_CTRL channel register will update the required channel only. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:52 +03:00
/* PLL channels */
REG32(A2W_PLLA_DSI0, 0x1300)
FIELD(A2W_PLLx_CHANNELy, DIV, 0, 8)
FIELD(A2W_PLLx_CHANNELy, DISABLE, 8, 1)
REG32(A2W_PLLA_CORE, 0x1400)
REG32(A2W_PLLA_PER, 0x1500)
REG32(A2W_PLLA_CCP2, 0x1600)
REG32(A2W_PLLC_CORE2, 0x1320)
REG32(A2W_PLLC_CORE1, 0x1420)
REG32(A2W_PLLC_PER, 0x1520)
REG32(A2W_PLLC_CORE0, 0x1620)
REG32(A2W_PLLD_DSI0, 0x1340)
REG32(A2W_PLLD_CORE, 0x1440)
REG32(A2W_PLLD_PER, 0x1540)
REG32(A2W_PLLD_DSI1, 0x1640)
REG32(A2W_PLLH_AUX, 0x1360)
REG32(A2W_PLLH_RCAL, 0x1460)
REG32(A2W_PLLH_PIX, 0x1560)
REG32(A2W_PLLH_STS, 0x1660)
REG32(A2W_PLLB_ARM, 0x13e0)
hw/misc/bcm2835_cprman: add a clock mux skeleton implementation The clock multiplexers are the last clock stage in the CPRMAN. Each mux outputs one clock signal that goes out of the CPRMAN to the SoC peripherals. Each mux has at most 10 sources. The sources 0 to 3 are common to all muxes. They are: 0. ground (no clock signal) 1. the main oscillator (xosc) 2. "test debug 0" clock 3. "test debug 1" clock Test debug 0 and 1 are actual clock muxes that can be used as sources to other muxes (for debug purpose). Sources 4 to 9 are mux specific and can be unpopulated (grounded). Those sources are fed by the PLL channels outputs. One corner case exists for DSI0E and DSI0P muxes. They have their source number 4 connected to an intermediate multiplexer that can select between PLLA-DSI0 and PLLD-DSI0 channel. This multiplexer is called DSI0HSCK and is not a clock mux as such. It is really a simple mux from the hardware point of view (see https://elinux.org/The_Undocumented_Pi). This mux is not implemented in this commit. Note that there is some muxes for which sources are unknown (because of a lack of documentation). For those cases all the sources are connected to ground in this implementation. Each clock mux output is exported by the CPRMAN at the qdev level, adding the suffix '-out' to the mux name to form the output clock name. (E.g. the 'uart' mux sees its output exported as 'uart-out' at the CPRMAN level.) Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:54 +03:00
/* Clock muxes */
REG32(CM_GNRICCTL, 0x000)
FIELD(CM_CLOCKx_CTL, SRC, 0, 4)
FIELD(CM_CLOCKx_CTL, ENABLE, 4, 1)
FIELD(CM_CLOCKx_CTL, KILL, 5, 1)
FIELD(CM_CLOCKx_CTL, GATE, 6, 1)
FIELD(CM_CLOCKx_CTL, BUSY, 7, 1)
FIELD(CM_CLOCKx_CTL, BUSYD, 8, 1)
FIELD(CM_CLOCKx_CTL, MASH, 9, 2)
FIELD(CM_CLOCKx_CTL, FLIP, 11, 1)
REG32(CM_GNRICDIV, 0x004)
FIELD(CM_CLOCKx_DIV, FRAC, 0, 12)
REG32(CM_VPUCTL, 0x008)
REG32(CM_VPUDIV, 0x00c)
REG32(CM_SYSCTL, 0x010)
REG32(CM_SYSDIV, 0x014)
REG32(CM_PERIACTL, 0x018)
REG32(CM_PERIADIV, 0x01c)
REG32(CM_PERIICTL, 0x020)
REG32(CM_PERIIDIV, 0x024)
REG32(CM_H264CTL, 0x028)
REG32(CM_H264DIV, 0x02c)
REG32(CM_ISPCTL, 0x030)
REG32(CM_ISPDIV, 0x034)
REG32(CM_V3DCTL, 0x038)
REG32(CM_V3DDIV, 0x03c)
REG32(CM_CAM0CTL, 0x040)
REG32(CM_CAM0DIV, 0x044)
REG32(CM_CAM1CTL, 0x048)
REG32(CM_CAM1DIV, 0x04c)
REG32(CM_CCP2CTL, 0x050)
REG32(CM_CCP2DIV, 0x054)
REG32(CM_DSI0ECTL, 0x058)
REG32(CM_DSI0EDIV, 0x05c)
REG32(CM_DSI0PCTL, 0x060)
REG32(CM_DSI0PDIV, 0x064)
REG32(CM_DPICTL, 0x068)
REG32(CM_DPIDIV, 0x06c)
REG32(CM_GP0CTL, 0x070)
REG32(CM_GP0DIV, 0x074)
REG32(CM_GP1CTL, 0x078)
REG32(CM_GP1DIV, 0x07c)
REG32(CM_GP2CTL, 0x080)
REG32(CM_GP2DIV, 0x084)
REG32(CM_HSMCTL, 0x088)
REG32(CM_HSMDIV, 0x08c)
REG32(CM_OTPCTL, 0x090)
REG32(CM_OTPDIV, 0x094)
REG32(CM_PCMCTL, 0x098)
REG32(CM_PCMDIV, 0x09c)
REG32(CM_PWMCTL, 0x0a0)
REG32(CM_PWMDIV, 0x0a4)
REG32(CM_SLIMCTL, 0x0a8)
REG32(CM_SLIMDIV, 0x0ac)
REG32(CM_SMICTL, 0x0b0)
REG32(CM_SMIDIV, 0x0b4)
REG32(CM_TCNTCTL, 0x0c0)
REG32(CM_TCNTCNT, 0x0c4)
REG32(CM_TECCTL, 0x0c8)
REG32(CM_TECDIV, 0x0cc)
REG32(CM_TD0CTL, 0x0d0)
REG32(CM_TD0DIV, 0x0d4)
REG32(CM_TD1CTL, 0x0d8)
REG32(CM_TD1DIV, 0x0dc)
REG32(CM_TSENSCTL, 0x0e0)
REG32(CM_TSENSDIV, 0x0e4)
REG32(CM_TIMERCTL, 0x0e8)
REG32(CM_TIMERDIV, 0x0ec)
REG32(CM_UARTCTL, 0x0f0)
REG32(CM_UARTDIV, 0x0f4)
REG32(CM_VECCTL, 0x0f8)
REG32(CM_VECDIV, 0x0fc)
REG32(CM_PULSECTL, 0x190)
REG32(CM_PULSEDIV, 0x194)
REG32(CM_SDCCTL, 0x1a8)
REG32(CM_SDCDIV, 0x1ac)
REG32(CM_ARMCTL, 0x1b0)
REG32(CM_AVEOCTL, 0x1b8)
REG32(CM_AVEODIV, 0x1bc)
REG32(CM_EMMCCTL, 0x1c0)
REG32(CM_EMMCDIV, 0x1c4)
REG32(CM_EMMC2CTL, 0x1d0)
REG32(CM_EMMC2DIV, 0x1d4)
hw/misc/bcm2835_cprman: implement PLLs behaviour The CPRMAN PLLs generate a clock based on a prescaler, a multiplier and a divider. The prescaler doubles the parent (xosc) frequency, then the multiplier/divider are applied. The multiplier has an integer and a fractional part. This commit also implements the CPRMAN CM_LOCK register. This register reports which PLL is currently locked. We consider a PLL has being locked as soon as it is enabled (on real hardware, there is a delay after turning a PLL on, for it to stabilize). Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:51 +03:00
/* misc registers */
REG32(CM_LOCK, 0x114)
FIELD(CM_LOCK, FLOCKH, 12, 1)
FIELD(CM_LOCK, FLOCKD, 11, 1)
FIELD(CM_LOCK, FLOCKC, 10, 1)
FIELD(CM_LOCK, FLOCKB, 9, 1)
FIELD(CM_LOCK, FLOCKA, 8, 1)
hw/misc/bcm2835_cprman: add the DSI0HSCK multiplexer This simple mux sits between the PLL channels and the DSI0E and DSI0P clock muxes. This mux selects between PLLA-DSI0 and PLLD-DSI0 channel and outputs the selected signal to source number 4 of DSI0E/P clock muxes. It is controlled by the cm_dsi0hsck register. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:56 +03:00
REG32(CM_DSI0HSCK, 0x120)
FIELD(CM_DSI0HSCK, SELPLLD, 0, 1)
hw/arm/raspi: add a skeleton implementation of the CPRMAN The BCM2835 CPRMAN is the clock manager of the SoC. It is composed of a main oscillator, and several sub-components (PLLs, multiplexers, ...) to generate the BCM2835 clock tree. This commit adds a skeleton of the CPRMAN, with a dummy register read/write implementation. It embeds the main oscillator (xosc) from which all the clocks will be derived. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:49 +03:00
/*
* This field is common to all registers. Each register write value must match
* the CPRMAN_PASSWORD magic value in its 8 MSB.
*/
FIELD(CPRMAN, PASSWORD, 24, 8)
#define CPRMAN_PASSWORD 0x5a
hw/misc/bcm2835_cprman: add a PLL skeleton implementation There are 5 PLLs in the CPRMAN, namely PLL A, C, D, H and B. All of them take the xosc clock as input and produce a new clock. This commit adds a skeleton implementation for the PLLs as sub-devices of the CPRMAN. The PLLs are instantiated and connected internally to the main oscillator. Each PLL has 6 registers : CM, A2W_CTRL, A2W_ANA[0,1,2,3], A2W_FRAC. A write to any of them triggers a call to the (not yet implemented) pll_update function. If the main oscillator changes frequency, an update is also triggered. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:50 +03:00
/* PLL init info */
typedef struct PLLInitInfo {
const char *name;
size_t cm_offset;
size_t a2w_ctrl_offset;
size_t a2w_ana_offset;
uint32_t prediv_mask; /* Prediv bit in ana[1] */
size_t a2w_frac_offset;
} PLLInitInfo;
#define FILL_PLL_INIT_INFO(pll_) \
.cm_offset = R_CM_ ## pll_, \
.a2w_ctrl_offset = R_A2W_ ## pll_ ## _CTRL, \
.a2w_ana_offset = R_A2W_ ## pll_ ## _ANA0, \
.a2w_frac_offset = R_A2W_ ## pll_ ## _FRAC
static const PLLInitInfo PLL_INIT_INFO[] = {
[CPRMAN_PLLA] = {
.name = "plla",
.prediv_mask = R_A2W_PLLx_ANA1_FB_PREDIV_MASK,
FILL_PLL_INIT_INFO(PLLA),
},
[CPRMAN_PLLC] = {
.name = "pllc",
.prediv_mask = R_A2W_PLLx_ANA1_FB_PREDIV_MASK,
FILL_PLL_INIT_INFO(PLLC),
},
[CPRMAN_PLLD] = {
.name = "plld",
.prediv_mask = R_A2W_PLLx_ANA1_FB_PREDIV_MASK,
FILL_PLL_INIT_INFO(PLLD),
},
[CPRMAN_PLLH] = {
.name = "pllh",
.prediv_mask = R_A2W_PLLH_ANA1_FB_PREDIV_MASK,
FILL_PLL_INIT_INFO(PLLH),
},
[CPRMAN_PLLB] = {
.name = "pllb",
.prediv_mask = R_A2W_PLLx_ANA1_FB_PREDIV_MASK,
FILL_PLL_INIT_INFO(PLLB),
},
};
#undef FILL_PLL_CHANNEL_INIT_INFO
static inline void set_pll_init_info(BCM2835CprmanState *s,
CprmanPllState *pll,
CprmanPll id)
{
pll->id = id;
pll->reg_cm = &s->regs[PLL_INIT_INFO[id].cm_offset];
pll->reg_a2w_ctrl = &s->regs[PLL_INIT_INFO[id].a2w_ctrl_offset];
pll->reg_a2w_ana = &s->regs[PLL_INIT_INFO[id].a2w_ana_offset];
pll->prediv_mask = PLL_INIT_INFO[id].prediv_mask;
pll->reg_a2w_frac = &s->regs[PLL_INIT_INFO[id].a2w_frac_offset];
}
hw/misc/bcm2835_cprman: add a PLL channel skeleton implementation PLLs are composed of multiple channels. Each channel outputs one clock signal. They are modeled as one device taking the PLL generated clock as input, and outputting a new clock. A channel shares the CM register with its parent PLL, and has its own A2W_CTRL register. A write to the CM register will trigger an update of the PLL and all its channels, while a write to an A2W_CTRL channel register will update the required channel only. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:52 +03:00
/* PLL channel init info */
typedef struct PLLChannelInitInfo {
const char *name;
CprmanPll parent;
size_t cm_offset;
uint32_t cm_hold_mask;
uint32_t cm_load_mask;
size_t a2w_ctrl_offset;
unsigned int fixed_divider;
} PLLChannelInitInfo;
#define FILL_PLL_CHANNEL_INIT_INFO_common(pll_, channel_) \
.parent = CPRMAN_ ## pll_, \
.cm_offset = R_CM_ ## pll_, \
.cm_load_mask = R_CM_ ## pll_ ## _ ## LOAD ## channel_ ## _MASK, \
.a2w_ctrl_offset = R_A2W_ ## pll_ ## _ ## channel_
#define FILL_PLL_CHANNEL_INIT_INFO(pll_, channel_) \
FILL_PLL_CHANNEL_INIT_INFO_common(pll_, channel_), \
.cm_hold_mask = R_CM_ ## pll_ ## _ ## HOLD ## channel_ ## _MASK, \
.fixed_divider = 1
#define FILL_PLL_CHANNEL_INIT_INFO_nohold(pll_, channel_) \
FILL_PLL_CHANNEL_INIT_INFO_common(pll_, channel_), \
.cm_hold_mask = 0
static PLLChannelInitInfo PLL_CHANNEL_INIT_INFO[] = {
[CPRMAN_PLLA_CHANNEL_DSI0] = {
.name = "plla-dsi0",
FILL_PLL_CHANNEL_INIT_INFO(PLLA, DSI0),
},
[CPRMAN_PLLA_CHANNEL_CORE] = {
.name = "plla-core",
FILL_PLL_CHANNEL_INIT_INFO(PLLA, CORE),
},
[CPRMAN_PLLA_CHANNEL_PER] = {
.name = "plla-per",
FILL_PLL_CHANNEL_INIT_INFO(PLLA, PER),
},
[CPRMAN_PLLA_CHANNEL_CCP2] = {
.name = "plla-ccp2",
FILL_PLL_CHANNEL_INIT_INFO(PLLA, CCP2),
},
[CPRMAN_PLLC_CHANNEL_CORE2] = {
.name = "pllc-core2",
FILL_PLL_CHANNEL_INIT_INFO(PLLC, CORE2),
},
[CPRMAN_PLLC_CHANNEL_CORE1] = {
.name = "pllc-core1",
FILL_PLL_CHANNEL_INIT_INFO(PLLC, CORE1),
},
[CPRMAN_PLLC_CHANNEL_PER] = {
.name = "pllc-per",
FILL_PLL_CHANNEL_INIT_INFO(PLLC, PER),
},
[CPRMAN_PLLC_CHANNEL_CORE0] = {
.name = "pllc-core0",
FILL_PLL_CHANNEL_INIT_INFO(PLLC, CORE0),
},
[CPRMAN_PLLD_CHANNEL_DSI0] = {
.name = "plld-dsi0",
FILL_PLL_CHANNEL_INIT_INFO(PLLD, DSI0),
},
[CPRMAN_PLLD_CHANNEL_CORE] = {
.name = "plld-core",
FILL_PLL_CHANNEL_INIT_INFO(PLLD, CORE),
},
[CPRMAN_PLLD_CHANNEL_PER] = {
.name = "plld-per",
FILL_PLL_CHANNEL_INIT_INFO(PLLD, PER),
},
[CPRMAN_PLLD_CHANNEL_DSI1] = {
.name = "plld-dsi1",
FILL_PLL_CHANNEL_INIT_INFO(PLLD, DSI1),
},
[CPRMAN_PLLH_CHANNEL_AUX] = {
.name = "pllh-aux",
.fixed_divider = 1,
FILL_PLL_CHANNEL_INIT_INFO_nohold(PLLH, AUX),
},
[CPRMAN_PLLH_CHANNEL_RCAL] = {
.name = "pllh-rcal",
.fixed_divider = 10,
FILL_PLL_CHANNEL_INIT_INFO_nohold(PLLH, RCAL),
},
[CPRMAN_PLLH_CHANNEL_PIX] = {
.name = "pllh-pix",
.fixed_divider = 10,
FILL_PLL_CHANNEL_INIT_INFO_nohold(PLLH, PIX),
},
[CPRMAN_PLLB_CHANNEL_ARM] = {
.name = "pllb-arm",
FILL_PLL_CHANNEL_INIT_INFO(PLLB, ARM),
},
};
#undef FILL_PLL_CHANNEL_INIT_INFO_nohold
#undef FILL_PLL_CHANNEL_INIT_INFO
#undef FILL_PLL_CHANNEL_INIT_INFO_common
static inline void set_pll_channel_init_info(BCM2835CprmanState *s,
CprmanPllChannelState *channel,
CprmanPllChannel id)
{
channel->id = id;
channel->parent = PLL_CHANNEL_INIT_INFO[id].parent;
channel->reg_cm = &s->regs[PLL_CHANNEL_INIT_INFO[id].cm_offset];
channel->hold_mask = PLL_CHANNEL_INIT_INFO[id].cm_hold_mask;
channel->load_mask = PLL_CHANNEL_INIT_INFO[id].cm_load_mask;
channel->reg_a2w_ctrl = &s->regs[PLL_CHANNEL_INIT_INFO[id].a2w_ctrl_offset];
channel->fixed_divider = PLL_CHANNEL_INIT_INFO[id].fixed_divider;
}
hw/misc/bcm2835_cprman: add a clock mux skeleton implementation The clock multiplexers are the last clock stage in the CPRMAN. Each mux outputs one clock signal that goes out of the CPRMAN to the SoC peripherals. Each mux has at most 10 sources. The sources 0 to 3 are common to all muxes. They are: 0. ground (no clock signal) 1. the main oscillator (xosc) 2. "test debug 0" clock 3. "test debug 1" clock Test debug 0 and 1 are actual clock muxes that can be used as sources to other muxes (for debug purpose). Sources 4 to 9 are mux specific and can be unpopulated (grounded). Those sources are fed by the PLL channels outputs. One corner case exists for DSI0E and DSI0P muxes. They have their source number 4 connected to an intermediate multiplexer that can select between PLLA-DSI0 and PLLD-DSI0 channel. This multiplexer is called DSI0HSCK and is not a clock mux as such. It is really a simple mux from the hardware point of view (see https://elinux.org/The_Undocumented_Pi). This mux is not implemented in this commit. Note that there is some muxes for which sources are unknown (because of a lack of documentation). For those cases all the sources are connected to ground in this implementation. Each clock mux output is exported by the CPRMAN at the qdev level, adding the suffix '-out' to the mux name to form the output clock name. (E.g. the 'uart' mux sees its output exported as 'uart-out' at the CPRMAN level.) Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:54 +03:00
/* Clock mux init info */
typedef struct ClockMuxInitInfo {
const char *name;
size_t cm_offset; /* cm_offset[0]->CM_CTL, cm_offset[1]->CM_DIV */
int int_bits;
int frac_bits;
CprmanPllChannel src_mapping[CPRMAN_NUM_CLOCK_MUX_SRC];
} ClockMuxInitInfo;
/*
* Each clock mux can have up to 10 sources. Sources 0 to 3 are always the
* same (ground, xosc, td0, td1). Sources 4 to 9 are mux specific, and are not
* always populated. The following macros catch all those cases.
*/
/* Unknown mapping. Connect everything to ground */
#define SRC_MAPPING_INFO_unknown \
.src_mapping = { \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* gnd */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* xosc */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* test debug 0 */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* test debug 1 */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll a */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll c */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll d */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll h */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll c, core1 */ \
CPRMAN_CLOCK_SRC_FORCE_GROUND, /* pll c, core2 */ \
}
/* Only the oscillator and the two test debug clocks */
#define SRC_MAPPING_INFO_xosc \
.src_mapping = { \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
}
/* All the PLL "core" channels */
#define SRC_MAPPING_INFO_core \
.src_mapping = { \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_PLLA_CHANNEL_CORE, \
CPRMAN_PLLC_CHANNEL_CORE0, \
CPRMAN_PLLD_CHANNEL_CORE, \
CPRMAN_PLLH_CHANNEL_AUX, \
CPRMAN_PLLC_CHANNEL_CORE1, \
CPRMAN_PLLC_CHANNEL_CORE2, \
}
/* All the PLL "per" channels */
#define SRC_MAPPING_INFO_periph \
.src_mapping = { \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_PLLA_CHANNEL_PER, \
CPRMAN_PLLC_CHANNEL_PER, \
CPRMAN_PLLD_CHANNEL_PER, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
}
/*
* The DSI0 channels. This one got an intermediate mux between the PLL channels
* and the clock input.
*/
#define SRC_MAPPING_INFO_dsi0 \
.src_mapping = { \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_DSI0HSCK, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
}
/* The DSI1 channel */
#define SRC_MAPPING_INFO_dsi1 \
.src_mapping = { \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_CLOCK_SRC_NORMAL, \
CPRMAN_PLLD_CHANNEL_DSI1, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
CPRMAN_CLOCK_SRC_FORCE_GROUND, \
}
#define FILL_CLOCK_MUX_SRC_MAPPING_INIT_INFO(kind_) \
SRC_MAPPING_INFO_ ## kind_
#define FILL_CLOCK_MUX_INIT_INFO(clock_, kind_) \
.cm_offset = R_CM_ ## clock_ ## CTL, \
FILL_CLOCK_MUX_SRC_MAPPING_INIT_INFO(kind_)
static ClockMuxInitInfo CLOCK_MUX_INIT_INFO[] = {
[CPRMAN_CLOCK_GNRIC] = {
.name = "gnric",
FILL_CLOCK_MUX_INIT_INFO(GNRIC, unknown),
},
[CPRMAN_CLOCK_VPU] = {
.name = "vpu",
.int_bits = 12,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(VPU, core),
},
[CPRMAN_CLOCK_SYS] = {
.name = "sys",
FILL_CLOCK_MUX_INIT_INFO(SYS, unknown),
},
[CPRMAN_CLOCK_PERIA] = {
.name = "peria",
FILL_CLOCK_MUX_INIT_INFO(PERIA, unknown),
},
[CPRMAN_CLOCK_PERII] = {
.name = "perii",
FILL_CLOCK_MUX_INIT_INFO(PERII, unknown),
},
[CPRMAN_CLOCK_H264] = {
.name = "h264",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(H264, core),
},
[CPRMAN_CLOCK_ISP] = {
.name = "isp",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(ISP, core),
},
[CPRMAN_CLOCK_V3D] = {
.name = "v3d",
FILL_CLOCK_MUX_INIT_INFO(V3D, core),
},
[CPRMAN_CLOCK_CAM0] = {
.name = "cam0",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(CAM0, periph),
},
[CPRMAN_CLOCK_CAM1] = {
.name = "cam1",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(CAM1, periph),
},
[CPRMAN_CLOCK_CCP2] = {
.name = "ccp2",
FILL_CLOCK_MUX_INIT_INFO(CCP2, unknown),
},
[CPRMAN_CLOCK_DSI0E] = {
.name = "dsi0e",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(DSI0E, dsi0),
},
[CPRMAN_CLOCK_DSI0P] = {
.name = "dsi0p",
.int_bits = 0,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(DSI0P, dsi0),
},
[CPRMAN_CLOCK_DPI] = {
.name = "dpi",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(DPI, periph),
},
[CPRMAN_CLOCK_GP0] = {
.name = "gp0",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(GP0, periph),
},
[CPRMAN_CLOCK_GP1] = {
.name = "gp1",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(GP1, periph),
},
[CPRMAN_CLOCK_GP2] = {
.name = "gp2",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(GP2, periph),
},
[CPRMAN_CLOCK_HSM] = {
.name = "hsm",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(HSM, periph),
},
[CPRMAN_CLOCK_OTP] = {
.name = "otp",
.int_bits = 4,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(OTP, xosc),
},
[CPRMAN_CLOCK_PCM] = {
.name = "pcm",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(PCM, periph),
},
[CPRMAN_CLOCK_PWM] = {
.name = "pwm",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(PWM, periph),
},
[CPRMAN_CLOCK_SLIM] = {
.name = "slim",
.int_bits = 12,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(SLIM, periph),
},
[CPRMAN_CLOCK_SMI] = {
.name = "smi",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(SMI, periph),
},
[CPRMAN_CLOCK_TEC] = {
.name = "tec",
.int_bits = 6,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(TEC, xosc),
},
[CPRMAN_CLOCK_TD0] = {
.name = "td0",
FILL_CLOCK_MUX_INIT_INFO(TD0, unknown),
},
[CPRMAN_CLOCK_TD1] = {
.name = "td1",
FILL_CLOCK_MUX_INIT_INFO(TD1, unknown),
},
[CPRMAN_CLOCK_TSENS] = {
.name = "tsens",
.int_bits = 5,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(TSENS, xosc),
},
[CPRMAN_CLOCK_TIMER] = {
.name = "timer",
.int_bits = 6,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(TIMER, xosc),
},
[CPRMAN_CLOCK_UART] = {
.name = "uart",
.int_bits = 10,
.frac_bits = 12,
FILL_CLOCK_MUX_INIT_INFO(UART, periph),
},
[CPRMAN_CLOCK_VEC] = {
.name = "vec",
.int_bits = 4,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(VEC, periph),
},
[CPRMAN_CLOCK_PULSE] = {
.name = "pulse",
FILL_CLOCK_MUX_INIT_INFO(PULSE, xosc),
},
[CPRMAN_CLOCK_SDC] = {
.name = "sdram",
.int_bits = 6,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(SDC, core),
},
[CPRMAN_CLOCK_ARM] = {
.name = "arm",
FILL_CLOCK_MUX_INIT_INFO(ARM, unknown),
},
[CPRMAN_CLOCK_AVEO] = {
.name = "aveo",
.int_bits = 4,
.frac_bits = 0,
FILL_CLOCK_MUX_INIT_INFO(AVEO, periph),
},
[CPRMAN_CLOCK_EMMC] = {
.name = "emmc",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(EMMC, periph),
},
[CPRMAN_CLOCK_EMMC2] = {
.name = "emmc2",
.int_bits = 4,
.frac_bits = 8,
FILL_CLOCK_MUX_INIT_INFO(EMMC2, unknown),
},
};
#undef FILL_CLOCK_MUX_INIT_INFO
#undef FILL_CLOCK_MUX_SRC_MAPPING_INIT_INFO
#undef SRC_MAPPING_INFO_dsi1
#undef SRC_MAPPING_INFO_dsi0
#undef SRC_MAPPING_INFO_periph
#undef SRC_MAPPING_INFO_core
#undef SRC_MAPPING_INFO_xosc
#undef SRC_MAPPING_INFO_unknown
static inline void set_clock_mux_init_info(BCM2835CprmanState *s,
CprmanClockMuxState *mux,
CprmanClockMux id)
{
mux->id = id;
mux->reg_ctl = &s->regs[CLOCK_MUX_INIT_INFO[id].cm_offset];
mux->reg_div = &s->regs[CLOCK_MUX_INIT_INFO[id].cm_offset + 1];
mux->int_bits = CLOCK_MUX_INIT_INFO[id].int_bits;
mux->frac_bits = CLOCK_MUX_INIT_INFO[id].frac_bits;
}
hw/misc/bcm2835_cprman: add sane reset values to the registers Those reset values have been extracted from a Raspberry Pi 3 model B v1.2, using the 2020-08-20 version of raspios. The dump was done using the debugfs interface of the CPRMAN driver in Linux (under '/sys/kernel/debug/clk'). Each exposed clock tree stage (PLLs, channels and muxes) can be observed by reading the 'regdump' file (e.g. 'plla/regdump'). Those values are set by the Raspberry Pi firmware at boot time (Linux expects them to be set when it boots up). Some stages are not exposed by the Linux driver (e.g. the PLL B). For those, the reset values are unknown and left to 0 which implies a disabled output. Once booted in QEMU, the final clock tree is very similar to the one visible on real hardware. The differences come from some unimplemented devices for which the driver simply disable the corresponding clock. Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:57 +03:00
/*
* Object reset info
* Those values have been dumped from a Raspberry Pi 3 Model B v1.2 using the
* clk debugfs interface in Linux.
*/
typedef struct PLLResetInfo {
uint32_t cm;
uint32_t a2w_ctrl;
uint32_t a2w_ana[4];
uint32_t a2w_frac;
} PLLResetInfo;
static const PLLResetInfo PLL_RESET_INFO[] = {
[CPRMAN_PLLA] = {
.cm = 0x0000008a,
.a2w_ctrl = 0x0002103a,
.a2w_frac = 0x00098000,
.a2w_ana = { 0x00000000, 0x00144000, 0x00000000, 0x00000100 }
},
[CPRMAN_PLLC] = {
.cm = 0x00000228,
.a2w_ctrl = 0x0002103e,
.a2w_frac = 0x00080000,
.a2w_ana = { 0x00000000, 0x00144000, 0x00000000, 0x00000100 }
},
[CPRMAN_PLLD] = {
.cm = 0x0000020a,
.a2w_ctrl = 0x00021034,
.a2w_frac = 0x00015556,
.a2w_ana = { 0x00000000, 0x00144000, 0x00000000, 0x00000100 }
},
[CPRMAN_PLLH] = {
.cm = 0x00000000,
.a2w_ctrl = 0x0002102d,
.a2w_frac = 0x00000000,
.a2w_ana = { 0x00900000, 0x0000000c, 0x00000000, 0x00000000 }
},
[CPRMAN_PLLB] = {
/* unknown */
.cm = 0x00000000,
.a2w_ctrl = 0x00000000,
.a2w_frac = 0x00000000,
.a2w_ana = { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }
}
};
typedef struct PLLChannelResetInfo {
/*
* Even though a PLL channel has a CM register, it shares it with its
* parent PLL. The parent already takes care of the reset value.
*/
uint32_t a2w_ctrl;
} PLLChannelResetInfo;
static const PLLChannelResetInfo PLL_CHANNEL_RESET_INFO[] = {
[CPRMAN_PLLA_CHANNEL_DSI0] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLA_CHANNEL_CORE] = { .a2w_ctrl = 0x00000003 },
[CPRMAN_PLLA_CHANNEL_PER] = { .a2w_ctrl = 0x00000000 }, /* unknown */
[CPRMAN_PLLA_CHANNEL_CCP2] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLC_CHANNEL_CORE2] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLC_CHANNEL_CORE1] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLC_CHANNEL_PER] = { .a2w_ctrl = 0x00000002 },
[CPRMAN_PLLC_CHANNEL_CORE0] = { .a2w_ctrl = 0x00000002 },
[CPRMAN_PLLD_CHANNEL_DSI0] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLD_CHANNEL_CORE] = { .a2w_ctrl = 0x00000004 },
[CPRMAN_PLLD_CHANNEL_PER] = { .a2w_ctrl = 0x00000004 },
[CPRMAN_PLLD_CHANNEL_DSI1] = { .a2w_ctrl = 0x00000100 },
[CPRMAN_PLLH_CHANNEL_AUX] = { .a2w_ctrl = 0x00000004 },
[CPRMAN_PLLH_CHANNEL_RCAL] = { .a2w_ctrl = 0x00000000 },
[CPRMAN_PLLH_CHANNEL_PIX] = { .a2w_ctrl = 0x00000000 },
[CPRMAN_PLLB_CHANNEL_ARM] = { .a2w_ctrl = 0x00000000 }, /* unknown */
};
typedef struct ClockMuxResetInfo {
uint32_t cm_ctl;
uint32_t cm_div;
} ClockMuxResetInfo;
static const ClockMuxResetInfo CLOCK_MUX_RESET_INFO[] = {
[CPRMAN_CLOCK_GNRIC] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_VPU] = {
.cm_ctl = 0x00000245,
.cm_div = 0x00003000,
},
[CPRMAN_CLOCK_SYS] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_PERIA] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_PERII] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_H264] = {
.cm_ctl = 0x00000244,
.cm_div = 0x00003000,
},
[CPRMAN_CLOCK_ISP] = {
.cm_ctl = 0x00000244,
.cm_div = 0x00003000,
},
[CPRMAN_CLOCK_V3D] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_CAM0] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_CAM1] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_CCP2] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_DSI0E] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_DSI0P] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_DPI] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_GP0] = {
.cm_ctl = 0x00000200,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_GP1] = {
.cm_ctl = 0x00000096,
.cm_div = 0x00014000,
},
[CPRMAN_CLOCK_GP2] = {
.cm_ctl = 0x00000291,
.cm_div = 0x00249f00,
},
[CPRMAN_CLOCK_HSM] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_OTP] = {
.cm_ctl = 0x00000091,
.cm_div = 0x00004000,
},
[CPRMAN_CLOCK_PCM] = {
.cm_ctl = 0x00000200,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_PWM] = {
.cm_ctl = 0x00000200,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_SLIM] = {
.cm_ctl = 0x00000200,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_SMI] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_TEC] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_TD0] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_TD1] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_TSENS] = {
.cm_ctl = 0x00000091,
.cm_div = 0x0000a000,
},
[CPRMAN_CLOCK_TIMER] = {
.cm_ctl = 0x00000291,
.cm_div = 0x00013333,
},
[CPRMAN_CLOCK_UART] = {
.cm_ctl = 0x00000296,
.cm_div = 0x0000a6ab,
},
[CPRMAN_CLOCK_VEC] = {
.cm_ctl = 0x00000097,
.cm_div = 0x00002000,
},
[CPRMAN_CLOCK_PULSE] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_SDC] = {
.cm_ctl = 0x00004006,
.cm_div = 0x00003000,
},
[CPRMAN_CLOCK_ARM] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
[CPRMAN_CLOCK_AVEO] = {
.cm_ctl = 0x00000000,
.cm_div = 0x00000000,
},
[CPRMAN_CLOCK_EMMC] = {
.cm_ctl = 0x00000295,
.cm_div = 0x00006000,
},
[CPRMAN_CLOCK_EMMC2] = {
.cm_ctl = 0, /* unknown */
.cm_div = 0
},
};
hw/arm/raspi: add a skeleton implementation of the CPRMAN The BCM2835 CPRMAN is the clock manager of the SoC. It is composed of a main oscillator, and several sub-components (PLLs, multiplexers, ...) to generate the BCM2835 clock tree. This commit adds a skeleton of the CPRMAN, with a dummy register read/write implementation. It embeds the main oscillator (xosc) from which all the clocks will be derived. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Luc Michel <luc@lmichel.fr> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-10 16:57:49 +03:00
#endif
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