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Add support for eMMC 5.0 HS200 timings.

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This commit is contained in:
jmcneill 2015-08-02 22:47:05 +00:00
parent 57b5f3f4ec
commit 8b09343dd9
2 changed files with 15 additions and 6 deletions
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13
sys/dev/sdmmc/sdmmc_mem.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: sdmmc_mem.c,v 1.35 2015/08/02 21:44:36 jmcneill Exp $ */
/* $NetBSD: sdmmc_mem.c,v 1.36 2015/08/02 22:47:05 jmcneill Exp $ */
/* $OpenBSD: sdmmc_mem.c,v 1.10 2009/01/09 10:55:22 jsg Exp $ */
/*
@ -45,7 +45,7 @@
/* Routines for SD/MMC memory cards. */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sdmmc_mem.c,v 1.35 2015/08/02 21:44:36 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: sdmmc_mem.c,v 1.36 2015/08/02 22:47:05 jmcneill Exp $");
#ifdef _KERNEL_OPT
#include "opt_sdmmc.h"
@ -796,6 +796,7 @@ sdmmc_mem_mmc_init(struct sdmmc_softc *sc, struct sdmmc_function *sf)
int width, value, hs_timing, bus_clock, error;
char ext_csd[512];
uint32_t sectors = 0;
int host_ocr;
/* change bus clock */
bus_clock = min(sc->sc_busclk, sf->csd.tran_speed);
@ -805,6 +806,8 @@ sdmmc_mem_mmc_init(struct sdmmc_softc *sc, struct sdmmc_function *sf)
return error;
}
host_ocr = sdmmc_chip_host_ocr(sc->sc_sct, sc->sc_sch);
if (sf->csd.mmcver >= MMC_CSD_MMCVER_4_0) {
error = sdmmc_mem_send_cxd_data(sc,
MMC_SEND_EXT_CSD, ext_csd, sizeof(ext_csd));
@ -821,7 +824,11 @@ sdmmc_mem_mmc_init(struct sdmmc_softc *sc, struct sdmmc_function *sf)
return ENOTSUP;
}
if (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_F_52M) {
if (ISSET(host_ocr, MMC_OCR_1_7V_1_8V|MMC_OCR_1_8V_1_9V) &&
ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_F_HS200_1_8V) {
sf->csd.tran_speed = 200000; /* 200MHz SDR */
hs_timing = 2;
} else if (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_F_52M) {
sf->csd.tran_speed = 52000; /* 52MHz */
hs_timing = 1;
} else if (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_F_26M) {

8
sys/dev/sdmmc/sdmmcreg.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: sdmmcreg.h,v 1.16 2015/08/02 21:44:36 jmcneill Exp $ */
/* $NetBSD: sdmmcreg.h,v 1.17 2015/08/02 22:47:05 jmcneill Exp $ */
/* $OpenBSD: sdmmcreg.h,v 1.4 2009/01/09 10:55:22 jsg Exp $ */
/*
@ -135,12 +135,14 @@
#define EXT_CSD_STRUCTURE_VER_1_2 2 /* Version 4.1-4.2-4.3 */
/* EXT_CSD_CARD_TYPE */
/* The only currently valid values for this field are 0x01, 0x03, 0x07,
* 0x0B and 0x0F. */
#define EXT_CSD_CARD_TYPE_F_26M (1 << 0)
#define EXT_CSD_CARD_TYPE_F_52M (1 << 1)
#define EXT_CSD_CARD_TYPE_F_52M_1_8V (1 << 2)
#define EXT_CSD_CARD_TYPE_F_52M_1_2V (1 << 3)
#define EXT_CSD_CARD_TYPE_F_HS200_1_8V (1 << 4)
#define EXT_CSD_CARD_TYPE_F_HS200_1_2V (1 << 5)
#define EXT_CSD_CARD_TYPE_F_HS400_1_8V (1 << 6)
#define EXT_CSD_CARD_TYPE_F_HS400_1_2V (1 << 7)
#define EXT_CSD_CARD_TYPE_26M 0x01
#define EXT_CSD_CARD_TYPE_52M 0x03
#define EXT_CSD_CARD_TYPE_52M_V18 0x07