X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fclk%2Frockchip%2Fclk-mmc-phase.c;h=2685644826a06ed5a6f21240ad8af040bf4b0b9e;hb=2c91072aab3b305eb8f0f7c4b045cf169e622e1c;hp=bc24e5a002e77cad874a0c010fc55046aa66b0f4;hpb=e5df921a30a4a761eb6c1d4f8177a5a5e829dfea;p=karo-tx-linux.git

diff --git a/drivers/clk/rockchip/clk-mmc-phase.c b/drivers/clk/rockchip/clk-mmc-phase.c
index bc24e5a002e7..2685644826a0 100644
--- a/drivers/clk/rockchip/clk-mmc-phase.c
+++ b/drivers/clk/rockchip/clk-mmc-phase.c
@@ -41,6 +41,8 @@ static unsigned long rockchip_mmc_recalc(struct clk_hw *hw,
 #define ROCKCHIP_MMC_DEGREE_MASK 0x3
 #define ROCKCHIP_MMC_DELAYNUM_OFFSET 2
 #define ROCKCHIP_MMC_DELAYNUM_MASK (0xff << ROCKCHIP_MMC_DELAYNUM_OFFSET)
+#define ROCKCHIP_MMC_INIT_STATE_RESET 0x1
+#define ROCKCHIP_MMC_INIT_STATE_SHIFT 1
 
 #define PSECS_PER_SEC 1000000000000LL
 
@@ -159,6 +161,15 @@ struct clk *rockchip_clk_register_mmc(const char *name,
 	mmc_clock->reg = reg;
 	mmc_clock->shift = shift;
 
+	/*
+	 * Assert init_state to soft reset the CLKGEN
+	 * for mmc tuning phase and degree
+	 */
+	if (mmc_clock->shift == ROCKCHIP_MMC_INIT_STATE_SHIFT)
+		writel(HIWORD_UPDATE(ROCKCHIP_MMC_INIT_STATE_RESET,
+				     ROCKCHIP_MMC_INIT_STATE_RESET,
+				     mmc_clock->shift), mmc_clock->reg);
+
 	clk = clk_register(NULL, &mmc_clock->hw);
 	if (IS_ERR(clk))
 		goto err_free;