[PATCH v2 2/2] ARM: dts: sd_600eval: Fix eMMC lockup issue

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Parth Pancholi <parth.pancholi@xxxxxxxxxxxxxx>

This board locks up if we stress test the eMMC, as the regulator s4 is
unable to supply enough current for all the peripherials attached to it.
As this supply is wired up to most of the peripherials including DDR,
it resulted in such lockup.

This patch fixes this issue by setting s4 regulator correctly with
Auto power mode.

Reported-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
[Srinivas Kandagatla: rewrote the change log]
Tested-by: Girish Sharma <girish.sharma@xxxxxxxxxxxxxx>
Signed-off-by: Parth Pancholi <parth.pancholi@xxxxxxxxxxxxxx>
---
 arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts b/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts
index 7df0108..39ae2bc 100644
--- a/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts
+++ b/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts
@@ -1,6 +1,7 @@
 #include "qcom-apq8064-v2.0.dtsi"
 #include "qcom-apq8064-arrow-sd-600eval-pins.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mfd/qcom-rpm.h>
 
 / {
 	model = "Arrow Electronics, APQ8064 SD_600eval";
@@ -82,7 +83,8 @@
 				s4 {
 					regulator-min-microvolt	= <1800000>;
 					regulator-max-microvolt	= <1800000>;
-					qcom,switch-mode-frequency = <3200000>;
+					qcom,switch-mode-frequency = <1600000>;
+					qcom,force-mode = <QCOM_RPM_FORCE_MODE_AUTO>;
 					bias-pull-down;
 					regulator-always-on;
 				};
-- 
2.8.3

--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux