diff options
| author | Faiz Abbas <faiz_abbas@ti.com> | 2020-06-19 18:27:59 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-07-13 12:18:24 +0200 |
| commit | 0003417d5738fe2c8736aaa9abb3170fa0757689 (patch) | |
| tree | 0aa500a16fad1ffbc066688d82f813a7007b6a71 /drivers/mmc/host | |
| parent | fe52e2fbc6ef3b36dafebde61d1d87717bcde3d4 (diff) | |
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 <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200619125801.9530-6-faiz_abbas@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci_am654.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 8b0f69012d09..f7535ee3a232 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, |