Replace sdhci software reset by scu reset from top.

Signed-off-by: Cool Lee <redacted>
---
 drivers/mmc/host/sdhci-of-aspeed.c | 55 +++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-of-aspeed.c b/drivers/mmc/host/sdhci-of-aspeed.c
index d6de010551b9..01bc574272eb 100644
--- a/drivers/mmc/host/sdhci-of-aspeed.c
+++ b/drivers/mmc/host/sdhci-of-aspeed.c

@@ -13,6 +13,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/reset.h>
 #include <linux/spinlock.h>
 
 #include "sdhci-pltfm.h"

@@ -39,6 +40,7 @@
 struct aspeed_sdc {
 	struct clk *clk;
 	struct resource *res;
+	struct reset_control *rst;
 
 	spinlock_t lock;
 	void __iomem *regs;

@@ -328,13 +330,58 @@ static u32 aspeed_sdhci_readl(struct sdhci_host *host, int reg)
 	return val;
 }
 
+static void aspeed_sdhci_reset(struct sdhci_host *host, u8 mask)
+{
+	struct sdhci_pltfm_host *pltfm_priv;
+	struct aspeed_sdhci *aspeed_sdhci;
+	struct aspeed_sdc *aspeed_sdc;
+	u32 save_array[7];
+	u32 reg_array[] = {SDHCI_DMA_ADDRESS,
+			SDHCI_BLOCK_SIZE,
+			SDHCI_ARGUMENT,
+			SDHCI_HOST_CONTROL,
+			SDHCI_CLOCK_CONTROL,
+			SDHCI_INT_ENABLE,
+			SDHCI_SIGNAL_ENABLE};
+	int i;
+	u16 tran_mode;
+	u32 mmc8_mode;
+
+	pltfm_priv = sdhci_priv(host);
+	aspeed_sdhci = sdhci_pltfm_priv(pltfm_priv);
+	aspeed_sdc = aspeed_sdhci->parent;
+
+	if (!IS_ERR(aspeed_sdc->rst)) {
+		for (i = 0; i < ARRAY_SIZE(reg_array); i++)
+			save_array[i] = sdhci_readl(host, reg_array[i]);
+
+		tran_mode = sdhci_readw(host, SDHCI_TRANSFER_MODE);
+		mmc8_mode = readl(aspeed_sdc->regs);
+
+		reset_control_assert(aspeed_sdc->rst);
+		mdelay(1);
+		reset_control_deassert(aspeed_sdc->rst);
+		mdelay(1);

@@ -535,6 +582,12 @@ static int aspeed_sdc_probe(struct platform_device *pdev)
 
 	spin_lock_init(&sdc->lock);
 
+	sdc->rst = devm_reset_control_get(&pdev->dev, NULL);
+	if (!IS_ERR(sdc->rst)) {
+		reset_control_assert(sdc->rst);
+		reset_control_deassert(sdc->rst);