From 085b3b22d32fa48804c58709ac05b69c03f572eb Mon Sep 17 00:00:00 2001 From: Kongyang Liu Date: Tue, 16 Apr 2024 15:31:05 +0800 Subject: [PATCH] mmc: cv1800b: Add transmit tap delay config to fix write error Currently, only the receive delay is configured while the transmit delay is not set, which may result in errors when writing to the file. This issue can be resolved by setting PHY_TX_SRC_INVERT to SDHCI_PHY_TX_RX_DLY. Signed-off-by: Kongyang Liu Reviewed-by: Jaehoon Chung Reviewed-by: Jaehoon Chung --- drivers/mmc/cv1800b_sdhci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/cv1800b_sdhci.c b/drivers/mmc/cv1800b_sdhci.c index 9af6b97198..4e75051c31 100644 --- a/drivers/mmc/cv1800b_sdhci.c +++ b/drivers/mmc/cv1800b_sdhci.c @@ -12,6 +12,8 @@ #define MMC_MAX_CLOCK 375000000 #define TUNE_MAX_PHCODE 128 +#define PHY_TX_SRC_INVERT BIT(8) + struct cv1800b_sdhci_plat { struct mmc_config cfg; struct mmc mmc; @@ -19,7 +21,7 @@ struct cv1800b_sdhci_plat { static void cv1800b_set_tap_delay(struct sdhci_host *host, u16 tap) { - sdhci_writel(host, tap << 16, SDHCI_PHY_TX_RX_DLY); + sdhci_writel(host, PHY_TX_SRC_INVERT | tap << 16, SDHCI_PHY_TX_RX_DLY); } static void cv1800b_sdhci_reset(struct sdhci_host *host, u8 mask) -- 2.39.5