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40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
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From: Shiji Yang <yangshiji66@outlook.com>
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Date: Wed, 10 Jul 2024 12:18:52 +0800
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Subject: [PATCH] mmc: mtk-sd: initialize the pad and tune registers
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Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
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---
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--- a/drivers/mmc/host/mtk-sd.c
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+++ b/drivers/mmc/host/mtk-sd.c
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@@ -75,8 +75,12 @@
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#define MSDC_PATCH_BIT 0xb0
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#define MSDC_PATCH_BIT1 0xb4
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#define MSDC_PATCH_BIT2 0xb8
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+#define MSDC_PAD_CTRL0 0xe0
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+#define MSDC_PAD_CTRL1 0xe4
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+#define MSDC_PAD_CTRL2 0xe8
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#define MSDC_PAD_TUNE 0xec
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#define MSDC_PAD_TUNE0 0xf0
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+#define MSDC_PAD_TUNE1 0xf4
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#define PAD_DS_TUNE 0x188
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#define PAD_CMD_TUNE 0x18c
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#define EMMC51_CFG0 0x204
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@@ -1795,6 +1799,16 @@ static void msdc_init_hw(struct msdc_hos
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MSDC_PAD_TUNE_RXDLYSEL);
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}
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+ /* Set pins drive strength */
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+ writel(0x000d0044, host->base + MSDC_PAD_CTRL0);
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+ writel(0x000e0044, host->base + MSDC_PAD_CTRL1);
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+ writel(0x000e0044, host->base + MSDC_PAD_CTRL2);
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+
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+ /* Set pad delay */
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+ writel(0x84101010, host->base + MSDC_PAD_TUNE);
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+ writel(0x10101010, host->base + MSDC_PAD_TUNE0);
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+ writel(0x10101010, host->base + MSDC_PAD_TUNE1);
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+
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if (mmc->caps2 & MMC_CAP2_NO_SDIO) {
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sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIO);
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sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
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