hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ARM: dts: exynos: Use proper regulator for eMMC memory on Arndale Octa 

The eMMC memory is supplied by LDO18 (PVDD_EMMC_1V8) and buck10
(PVDD_EMMCF_2V8), not by LDO10. The LDO10 (PVDD_PRE_1V8) supplies
instead VDDP_MMC pin of eMMC host interface and it is already marked as
always on.

This change only properly models the hardware and reflects in usage of
regulators.  There is no functional change because:
1. LDO18 cannot be turned off (e.g. by lack of consumers) because in
   off mode it is controlled by LDO18EN pin, which is pulled up by
   always-on regulator LDO2 (PVDD_APIO_1V8).
2. LDO10 is marked as always on so removing its consumer will not have
   effect.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2019-06-21 17:44:54 +02:00
parent 3e7f057681
commit 74b94e6b80
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/boot/dts/exynos5420-arndale-octa.dts
View File

@ -780,7 +780,7 @@
samsung,dw-mshc-ddr-timing = <0 2>;
pinctrl-names = "default";
pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8>;
vmmc-supply = <&ldo10_reg>;
vmmc-supply = <&ldo18_reg>;
vqmmc-supply = <&ldo3_reg>;
bus-width = <8>;
cap-mmc-highspeed;