[PATCH v5 07/12] mmc: mediatek: add busy_check support
From: chaotian.jing@mediatek.com (Chaotian Jing)
Date: 2017-10-11 02:42:20
Also in:
linux-devicetree, linux-mediatek, linux-mmc, lkml
Subsystem:
mediatek mmc/sd/sdio driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Chaotian Jing, Ulf Hansson, Linus Torvalds
bit7 of PATCH_BIT1 has different meaning in new design, to compatible with previous platform, clear this bit in new platform. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> --- drivers/mmc/host/mtk-sd.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 8113bac..eceaee8 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c@@ -316,6 +316,7 @@ struct mtk_mmc_compatible { u32 pad_tune_reg; bool async_fifo; bool data_tune; + bool busy_check; }; struct msdc_tune_para {
@@ -380,6 +381,7 @@ struct msdc_host { .pad_tune_reg = MSDC_PAD_TUNE, .async_fifo = false, .data_tune = false, + .busy_check = false, }; static const struct mtk_mmc_compatible mt8173_compat = {
@@ -388,6 +390,7 @@ struct msdc_host { .pad_tune_reg = MSDC_PAD_TUNE, .async_fifo = false, .data_tune = false, + .busy_check = false, }; static const struct mtk_mmc_compatible mt2701_compat = {
@@ -396,6 +399,7 @@ struct msdc_host { .pad_tune_reg = MSDC_PAD_TUNE0, .async_fifo = true, .data_tune = true, + .busy_check = false, }; static const struct mtk_mmc_compatible mt2712_compat = {
@@ -404,6 +408,7 @@ struct msdc_host { .pad_tune_reg = MSDC_PAD_TUNE0, .async_fifo = true, .data_tune = true, + .busy_check = true, }; static const struct of_device_id msdc_of_ids[] = {
@@ -1275,6 +1280,8 @@ static void msdc_init_hw(struct msdc_host *host) sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_CKGEN_MSDC_DLY_SEL, 1); writel(0xffff4089, host->base + MSDC_PATCH_BIT1); sdr_set_bits(host->base + EMMC50_CFG0, EMMC50_CFG_CFCSTS_SEL); + if (host->dev_comp->busy_check) + sdr_clr_bits(host->base + MSDC_PATCH_BIT1, (1 << 7)); if (host->dev_comp->async_fifo) { sdr_set_field(host->base + MSDC_PATCH_BIT2, MSDC_PB2_RESPWAIT, 3);
--
1.8.1.1.dirty