This is a note to let you know that I've just added the patch titled
arm64: dts: rockchip: fix Quartz64-A ddr regulator voltage
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-rockchip-fix-quartz64-a-ddr-regulator-volt.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 79a124d5500cb9b3a89c99b7d5794e140a68ac70
Author: Peter Geis <pgwipeout@xxxxxxxxx>
Date: Thu Jan 27 19:38:05 2022 -0500
arm64: dts: rockchip: fix Quartz64-A ddr regulator voltage
[ Upstream commit ad02776cf8d083e28b1ca4d93d8b1949668c27cc ]
The Quartz64 Model A uses a voltage divider to ensure ddr voltage is
within specification from the default regulator configuration.
Adjusting this voltage is detrimental, and currently causes the ddr
voltage to be about 0.8v.
Remove the min and max voltage setpoints for the ddr regulator.
Fixes: b33a22a1e7c4 ("arm64: dts: rockchip: add basic dts for Pine64 Quartz64-A")
Signed-off-by: Peter Geis <pgwipeout@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220128003809.3291407-2-pgwipeout@xxxxxxxxx
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
index 4d4b2a301b1a..f6290538c8a4 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
@@ -285,8 +285,6 @@
vcc_ddr: DCDC_REG3 {
regulator-always-on;
regulator-boot-on;
- regulator-min-microvolt = <1100000>;
- regulator-max-microvolt = <1100000>;
regulator-initial-mode = <0x2>;
regulator-name = "vcc_ddr";
regulator-state-mem {
