From 0003417d5738fe2c8736aaa9abb3170fa0757689 Mon Sep 17 00:00:00 2001 From: Faiz Abbas Date: Fri, 19 Jun 2020 18:27:59 +0530 Subject: [PATCH] mmc: sdhci_am654: Update delay chain configuration For speed modes where DLL is not enabled write to TXDLYCLK to enable transmitter delay chain mode. Signed-off-by: Faiz Abbas Link: https://lore.kernel.org/r/20200619125801.9530-6-faiz_abbas@ti.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci_am654.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 8b0f69012d0948..f7535ee3a23294 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -61,6 +61,8 @@ #define CALDONE_MASK BIT(CALDONE_SHIFT) #define RETRIM_SHIFT 17 #define RETRIM_MASK BIT(RETRIM_SHIFT) +#define SELDLYTXCLK_SHIFT 17 +#define SELDLYTXCLK_MASK BIT(SELDLYTXCLK_SHIFT) #define DRIVER_STRENGTH_50_OHM 0x0 #define DRIVER_STRENGTH_33_OHM 0x1 @@ -228,8 +230,14 @@ static void sdhci_am654_set_clock(struct sdhci_host *host, unsigned int clock) regmap_update_bits(sdhci_am654->base, PHY_CTRL4, mask, val); - if (timing > MMC_TIMING_UHS_SDR25 && clock > CLOCK_TOO_SLOW_HZ) + if (timing > MMC_TIMING_UHS_SDR25 && clock > CLOCK_TOO_SLOW_HZ) { + regmap_update_bits(sdhci_am654->base, PHY_CTRL5, + SELDLYTXCLK_MASK, 0); sdhci_am654_setup_dll(host, clock); + } else { + regmap_update_bits(sdhci_am654->base, PHY_CTRL5, + SELDLYTXCLK_MASK, 1 << SELDLYTXCLK_SHIFT); + } } static void sdhci_j721e_4bit_set_clock(struct sdhci_host *host,