You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.4 KiB
68 lines
2.4 KiB
From 29e154716049310bb8c559f742bf2b460d5b6bbc Mon Sep 17 00:00:00 2001
|
|
From: Chaotian Jing <chaotian.jing@mediatek.com>
|
|
Date: Mon, 16 Oct 2017 09:46:38 +0800
|
|
Subject: [PATCH 159/224] mmc: mediatek: improve eMMC hs400 mode read
|
|
performance
|
|
|
|
enlarge outstanding value to improve read performance
|
|
|
|
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
|
|
Tested-by: Sean Wang <sean.wang@mediatek.com>
|
|
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
---
|
|
drivers/mmc/host/mtk-sd.c | 9 +++++++++
|
|
1 file changed, 9 insertions(+)
|
|
|
|
--- a/drivers/mmc/host/mtk-sd.c
|
|
+++ b/drivers/mmc/host/mtk-sd.c
|
|
@@ -81,6 +81,7 @@
|
|
#define PAD_DS_TUNE 0x188
|
|
#define PAD_CMD_TUNE 0x18c
|
|
#define EMMC50_CFG0 0x208
|
|
+#define EMMC50_CFG3 0x220
|
|
#define SDC_FIFO_CFG 0x228
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
@@ -251,6 +252,8 @@
|
|
#define EMMC50_CFG_CRCSTS_EDGE (0x1 << 3) /* RW */
|
|
#define EMMC50_CFG_CFCSTS_SEL (0x1 << 4) /* RW */
|
|
|
|
+#define EMMC50_CFG3_OUTS_WR (0x1f << 0) /* RW */
|
|
+
|
|
#define SDC_FIFO_CFG_WRVALIDSEL (0x1 << 24) /* RW */
|
|
#define SDC_FIFO_CFG_RDVALIDSEL (0x1 << 25) /* RW */
|
|
|
|
@@ -320,6 +323,7 @@ struct msdc_save_para {
|
|
u32 pad_ds_tune;
|
|
u32 pad_cmd_tune;
|
|
u32 emmc50_cfg0;
|
|
+ u32 emmc50_cfg3;
|
|
u32 sdc_fifo_cfg;
|
|
};
|
|
|
|
@@ -1750,6 +1754,9 @@ static int msdc_prepare_hs400_tuning(str
|
|
writel(host->hs400_ds_delay, host->base + PAD_DS_TUNE);
|
|
/* hs400 mode must set it to 0 */
|
|
sdr_clr_bits(host->base + MSDC_PATCH_BIT2, MSDC_PATCH_BIT2_CFGCRCSTS);
|
|
+ /* to improve read performance, set outstanding to 2 */
|
|
+ sdr_set_field(host->base + EMMC50_CFG3, EMMC50_CFG3_OUTS_WR, 2);
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
@@ -2000,6 +2007,7 @@ static void msdc_save_reg(struct msdc_ho
|
|
host->save_para.pad_ds_tune = readl(host->base + PAD_DS_TUNE);
|
|
host->save_para.pad_cmd_tune = readl(host->base + PAD_CMD_TUNE);
|
|
host->save_para.emmc50_cfg0 = readl(host->base + EMMC50_CFG0);
|
|
+ host->save_para.emmc50_cfg3 = readl(host->base + EMMC50_CFG3);
|
|
host->save_para.sdc_fifo_cfg = readl(host->base + SDC_FIFO_CFG);
|
|
}
|
|
|
|
@@ -2017,6 +2025,7 @@ static void msdc_restore_reg(struct msdc
|
|
writel(host->save_para.pad_ds_tune, host->base + PAD_DS_TUNE);
|
|
writel(host->save_para.pad_cmd_tune, host->base + PAD_CMD_TUNE);
|
|
writel(host->save_para.emmc50_cfg0, host->base + EMMC50_CFG0);
|
|
+ writel(host->save_para.emmc50_cfg3, host->base + EMMC50_CFG3);
|
|
writel(host->save_para.sdc_fifo_cfg, host->base + SDC_FIFO_CFG);
|
|
}
|
|
|
|
|