From: Shiji Yang <yangshiji66@outlook.com>
Date: Wed, 10 Jul 2024 12:18:52 +0800
Subject: [PATCH] mmc: mtk-sd: initialize the pad and tune registers

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---

--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -75,8 +75,12 @@
 #define MSDC_PATCH_BIT   0xb0
 #define MSDC_PATCH_BIT1  0xb4
 #define MSDC_PATCH_BIT2  0xb8
+#define MSDC_PAD_CTRL0   0xe0
+#define MSDC_PAD_CTRL1   0xe4
+#define MSDC_PAD_CTRL2   0xe8
 #define MSDC_PAD_TUNE    0xec
 #define MSDC_PAD_TUNE0   0xf0
+#define MSDC_PAD_TUNE1   0xf4
 #define PAD_DS_TUNE      0x188
 #define PAD_CMD_TUNE     0x18c
 #define EMMC51_CFG0	 0x204
@@ -1795,6 +1799,16 @@ static void msdc_init_hw(struct msdc_hos
 				     MSDC_PAD_TUNE_RXDLYSEL);
 	}
 
+	/* Set pins drive strength */
+	writel(0x000d0044, host->base + MSDC_PAD_CTRL0);
+	writel(0x000e0044, host->base + MSDC_PAD_CTRL1);
+	writel(0x000e0044, host->base + MSDC_PAD_CTRL2);
+
+	/* Set pad delay */
+	writel(0x84101010, host->base + MSDC_PAD_TUNE);
+	writel(0x10101010, host->base + MSDC_PAD_TUNE0);
+	writel(0x10101010, host->base + MSDC_PAD_TUNE1);
+
 	if (mmc->caps2 & MMC_CAP2_NO_SDIO) {
 		sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIO);
 		sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
