--- zzzz-none-000/linux-3.10.107/drivers/mmc/host/sdhci-esdhc.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/mmc/host/sdhci-esdhc.h	2021-02-04 17:41:59.000000000 +0000
@@ -20,10 +20,11 @@
 
 #define ESDHC_DEFAULT_QUIRKS	(SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
 				SDHCI_QUIRK_NO_BUSY_IRQ | \
-				SDHCI_QUIRK_NONSTANDARD_CLOCK | \
 				SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
 				SDHCI_QUIRK_PIO_NEEDS_DELAY | \
-				SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET)
+				SDHCI_QUIRK_NO_HISPD_BIT)
+
+#define ESDHC_PROCTL		0x28
 
 #define ESDHC_SYSTEM_CONTROL	0x2c
 #define ESDHC_CLOCK_MASK	0x0000fff0
@@ -36,46 +37,17 @@
 /* pltfm-specific */
 #define ESDHC_HOST_CONTROL_LE	0x20
 
+/*
+ * P2020 interpretation of the SDHCI_HOST_CONTROL register
+ */
+#define ESDHC_CTRL_4BITBUS          (0x1 << 1)
+#define ESDHC_CTRL_8BITBUS          (0x2 << 1)
+#define ESDHC_CTRL_BUSWIDTH_MASK    (0x3 << 1)
+
 /* OF-specific */
 #define ESDHC_DMA_SYSCTL	0x40c
 #define ESDHC_DMA_SNOOP		0x00000040
 
 #define ESDHC_HOST_CONTROL_RES	0x01
 
-static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
-{
-	int pre_div = 2;
-	int div = 1;
-	u32 temp;
-
-	if (clock == 0)
-		goto out;
-
-	temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
-	temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN
-		| ESDHC_CLOCK_MASK);
-	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
-
-	while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
-		pre_div *= 2;
-
-	while (host->max_clk / pre_div / div > clock && div < 16)
-		div++;
-
-	dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
-		clock, host->max_clk / pre_div / div);
-
-	pre_div >>= 1;
-	div--;
-
-	temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
-	temp |= (ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN
-		| (div << ESDHC_DIVIDER_SHIFT)
-		| (pre_div << ESDHC_PREDIV_SHIFT));
-	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
-	mdelay(1);
-out:
-	host->clock = clock;
-}
-
 #endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */