ARM: rmobile: Fix SD divider settings on Gen3
On RCar M3 and on RCar H3 newer than and not including ES1.0, the SD clock
must be divided by 4 rather than 2 because a hardware workaround present
only in the H3 ES1.0 has been removed from these chips. U-Boot currently
only supports M3 and H3 ES 2.0 and newer, so configure the SD pre-divider
to 4 to prevent SD instability.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/ulcb/ulcb.c b/board/renesas/ulcb/ulcb.c
index 2b6cc61..dc23228 100644
--- a/board/renesas/ulcb/ulcb.c
+++ b/board/renesas/ulcb/ulcb.c
@@ -72,10 +72,10 @@
/* SDHI0 */
mstp_clrbits_le32(MSTPSR3, SMSTPCR3, SD0_MSTP314);
- writel(0, SD0CKCR);
- writel(0, SD1CKCR);
- writel(0, SD2CKCR);
- writel(0, SD3CKCR);
+ writel(1, SD0CKCR);
+ writel(1, SD1CKCR);
+ writel(1, SD2CKCR);
+ writel(1, SD3CKCR);
#if defined(CONFIG_SYS_I2C) && defined(CONFIG_SYS_I2C_SH)
/* DVFS for reset */