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Commit 6f0f341d authored by Talel Shenhar's avatar Talel Shenhar Committed by Xiaonian Wang
Browse files

mmc: sdhci-msm: add support for fourth drive strength 



This change adds support for new drive strength.
Before this change sdhci-msm supported only 3 types of drive
strength, starting from eMMC version 5.0 there is additional
drive strength.

Change-Id: Ib0bf945560107ec732e7ffeb7653d271d8d91c2f
Signed-off-by: default avatarTalel Shenhar <tatias@codeaurora.org>
[subhashj@codeaurora.org: fixed minor merge conflicts]
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
parent d51865bf

drivers/mmc/host/sdhci-msm.c

+3 −1
Original line number Original line Diff line number Diff line
@@ -194,7 +194,7 @@ 
#define INVALID_TUNING_PHASE	-1

#define INVALID_TUNING_PHASE	-1





#define NUM_TUNING_PHASES		16

#define NUM_TUNING_PHASES		16

#define MAX_DRV_TYPES_SUPPORTED_HS200	3

#define MAX_DRV_TYPES_SUPPORTED_HS200	4

#define MSM_AUTOSUSPEND_DELAY_MS 100

#define MSM_AUTOSUSPEND_DELAY_MS 100





static const u32 tuning_block_64[] = {

static const u32 tuning_block_64[] = {
@@ -1092,6 +1092,8 @@ int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) 




		/* set drive type to other value . default setting is 0x0 */

		/* set drive type to other value . default setting is 0x0 */

		while (++drv_type <= MAX_DRV_TYPES_SUPPORTED_HS200) {

		while (++drv_type <= MAX_DRV_TYPES_SUPPORTED_HS200) {

			pr_debug("%s: trying different drive strength (%d)\n",

				mmc_hostname(mmc), drv_type);

			if (card->ext_csd.raw_driver_strength &

			if (card->ext_csd.raw_driver_strength &

					(1 << drv_type)) {

					(1 << drv_type)) {

				sdhci_msm_set_mmc_drv_type(host, opcode,

				sdhci_msm_set_mmc_drv_type(host, opcode,