ExternalVendorCode/openwrt
1
0
Fork 0
mirror of https://github.com/openwrt/openwrt.git synced 2024-12-23 15:32:33 +00:00
Code Issues Actions 7 Packages Projects Releases Wiki Activity
6b128326df
openwrt/target/linux/mediatek/patches-4.14/0156-mmc-mediatek-add-stop_clk-fix-and-enhance_rx-support.patch
Hauke Mehrtens 6b128326df kernel: bump 4.14 to 4.14.161 
Refreshed all patches.

Compile-tested on: ipq40xx
Runtime-tested on: none

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2020-01-01 21:50:16 +01:00

169 lines
5.5 KiB
Diff
Raw Blame History

From 9257240bcaf8f9ee6878357e00e7ab511ad6d325 Mon Sep 17 00:00:00 2001
From: Chaotian Jing <chaotian.jing@mediatek.com>
Date: Mon, 16 Oct 2017 09:46:35 +0800
Subject: [PATCH 156/224] mmc: mediatek: add stop_clk fix and enhance_rx
support
mt2712 supports stop_clk fix and enhance_rx, which can improve
host stability.
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 | 47 +++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 43 insertions(+), 4 deletions(-)
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -67,6 +67,7 @@
#define SDC_RESP2 0x48
#define SDC_RESP3 0x4c
#define SDC_BLK_NUM 0x50
+#define SDC_ADV_CFG0 0x64
#define EMMC_IOCON 0x7c
#define SDC_ACMD_RESP 0x80
#define MSDC_DMA_SA 0x90
@@ -80,6 +81,7 @@
#define PAD_DS_TUNE 0x188
#define PAD_CMD_TUNE 0x18c
#define EMMC50_CFG0 0x208
+#define SDC_FIFO_CFG 0x228
/*--------------------------------------------------------------------------*/
/* Register Mask */
@@ -188,6 +190,9 @@
#define SDC_STS_CMDBUSY (0x1 << 1) /* RW */
#define SDC_STS_SWR_COMPL (0x1 << 31) /* RW */
+/* SDC_ADV_CFG0 mask */
+#define SDC_RX_ENHANCE_EN (0x1 << 20) /* RW */
+
/* MSDC_DMA_CTRL mask */
#define MSDC_DMA_CTRL_START (0x1 << 0) /* W */
#define MSDC_DMA_CTRL_STOP (0x1 << 1) /* W */
@@ -219,6 +224,8 @@
#define MSDC_PATCH_BIT1_CMDTA (0x7 << 3) /* RW */
+#define MSDC_PATCH_BIT1_STOP_DLY (0xf << 8) /* RW */
+
#define MSDC_PATCH_BIT2_CFGRESP (0x1 << 15) /* RW */
#define MSDC_PATCH_BIT2_CFGCRCSTS (0x1 << 28) /* RW */
#define MSDC_PB2_RESPWAIT (0x3 << 2) /* RW */
@@ -244,6 +251,9 @@
#define EMMC50_CFG_CRCSTS_EDGE (0x1 << 3) /* RW */
#define EMMC50_CFG_CFCSTS_SEL (0x1 << 4) /* RW */
+#define SDC_FIFO_CFG_WRVALIDSEL (0x1 << 24) /* RW */
+#define SDC_FIFO_CFG_RDVALIDSEL (0x1 << 25) /* RW */
+
#define REQ_CMD_EIO (0x1 << 0)
#define REQ_CMD_TMO (0x1 << 1)
#define REQ_DAT_ERR (0x1 << 2)
@@ -310,6 +320,7 @@ struct msdc_save_para {
u32 pad_ds_tune;
u32 pad_cmd_tune;
u32 emmc50_cfg0;
+ u32 sdc_fifo_cfg;
};
struct mtk_mmc_compatible {
@@ -319,6 +330,8 @@ struct mtk_mmc_compatible {
bool async_fifo;
bool data_tune;
bool busy_check;
+ bool stop_clk_fix;
+ bool enhance_rx;
};
struct msdc_tune_para {
@@ -384,6 +397,8 @@ static const struct mtk_mmc_compatible m
.async_fifo = false,
.data_tune = false,
.busy_check = false,
+ .stop_clk_fix = false,
+ .enhance_rx = false,
};
static const struct mtk_mmc_compatible mt8173_compat = {
@@ -393,6 +408,8 @@ static const struct mtk_mmc_compatible m
.async_fifo = false,
.data_tune = false,
.busy_check = false,
+ .stop_clk_fix = false,
+ .enhance_rx = false,
};
static const struct mtk_mmc_compatible mt2701_compat = {
@@ -402,6 +419,8 @@ static const struct mtk_mmc_compatible m
.async_fifo = true,
.data_tune = true,
.busy_check = false,
+ .stop_clk_fix = false,
+ .enhance_rx = false,
};
static const struct mtk_mmc_compatible mt2712_compat = {
@@ -411,6 +430,8 @@ static const struct mtk_mmc_compatible m
.async_fifo = true,
.data_tune = true,
.busy_check = true,
+ .stop_clk_fix = true,
+ .enhance_rx = true,
};
static const struct of_device_id msdc_of_ids[] = {
@@ -1282,15 +1303,31 @@ static void msdc_init_hw(struct msdc_hos
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->stop_clk_fix) {
+ sdr_set_field(host->base + MSDC_PATCH_BIT1,
+ MSDC_PATCH_BIT1_STOP_DLY, 3);
+ sdr_clr_bits(host->base + SDC_FIFO_CFG,
+ SDC_FIFO_CFG_WRVALIDSEL);
+ sdr_clr_bits(host->base + SDC_FIFO_CFG,
+ SDC_FIFO_CFG_RDVALIDSEL);
+ }
+
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);
- sdr_set_field(host->base + MSDC_PATCH_BIT2,
- MSDC_PB2_RESPSTSENSEL, 2);
- sdr_set_field(host->base + MSDC_PATCH_BIT2,
- MSDC_PB2_CRCSTSENSEL, 2);
+ if (host->dev_comp->enhance_rx) {
+ sdr_set_bits(host->base + SDC_ADV_CFG0,
+ SDC_RX_ENHANCE_EN);
+ } else {
+ sdr_set_field(host->base + MSDC_PATCH_BIT2,
+ MSDC_PB2_RESPSTSENSEL, 2);
+ sdr_set_field(host->base + MSDC_PATCH_BIT2,
+ MSDC_PB2_CRCSTSENSEL, 2);
+ }
/* use async fifo, then no need tune internal delay */
sdr_clr_bits(host->base + MSDC_PATCH_BIT2,
MSDC_PATCH_BIT2_CFGRESP);
@@ -1936,6 +1973,7 @@ 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.sdc_fifo_cfg = readl(host->base + SDC_FIFO_CFG);
}
static void msdc_restore_reg(struct msdc_host *host)
@@ -1952,6 +1990,7 @@ 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.sdc_fifo_cfg, host->base + SDC_FIFO_CFG);
}
static int msdc_runtime_suspend(struct device *dev)
Reference in New Issue View Git Blame Copy Permalink