Commit 0003417d authored by Faiz Abbas's avatar Faiz Abbas Committed by Ulf Hansson
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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: default avatarFaiz Abbas <faiz_abbas@ti.com>
Link: https://lore.kernel.org/r/20200619125801.9530-6-faiz_abbas@ti.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent fe52e2fb
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+9 −1
Original line number Diff line number Diff line
@@ -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,