diff mbox series

[11/24] imx8mq: Enable eMMC HS400 and SD UHS mode on EVK

Message ID 20200422135235.14756-11-peng.fan@nxp.com
State New
Headers show
Series [01/24] imx: fix cpu_type helper | expand

Commit Message

Peng Fan April 22, 2020, 1:52 p.m. UTC 
From: Ye Li <ye.li at nxp.com>

iMX8MQ EVK board has a eMMC5.0 chip and supports SD3.0, so enable the UHS
and HS400 configs to enhance the eMMC/SD access.

The change also needs to set usdhc clock to 400Mhz, and add the
off-on-delay-us to SD reset pin, otherwise some SD cards will
fail to select UHS mode in re-initialization.

Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/mach-imx/imx8m/clock_imx8mq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
index aad9cf13ef..76104e4f92 100644
--- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c
+++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c
@@ -428,15 +428,13 @@  void init_clk_usdhc(u32 index)
 	case 0:
 		clock_enable(CCGR_USDHC1, 0);
 		clock_set_target_val(USDHC1_CLK_ROOT, CLK_ROOT_ON |
-				     CLK_ROOT_SOURCE_SEL(1) |
-				     CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2));
+				     CLK_ROOT_SOURCE_SEL(1));
 		clock_enable(CCGR_USDHC1, 1);
 		return;
 	case 1:
 		clock_enable(CCGR_USDHC2, 0);
 		clock_set_target_val(USDHC2_CLK_ROOT, CLK_ROOT_ON |
-				     CLK_ROOT_SOURCE_SEL(1) |
-				     CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV2));
+				     CLK_ROOT_SOURCE_SEL(1));
 		clock_enable(CCGR_USDHC2, 1);
 		return;
 	default: