On 11/20/2024 5:27 PM, Dmitry Baryshkov wrote:
On Tue, Nov 19, 2024 at 12:38:11PM +0530, Komal Bajaj wrote:
While adding the USB support, it was found that the configuration
for regulator smps5 was incorrectly set. Upon cross verifying for
all the regulators, found that smps4, smps6 and smps8 are also
incorrectly configured. The patch corrects these configurations.
In particular -
- smps4 is 1.574V min and 2.04V max
- smps5 is 1.2V min and 1.4V max
- smps6 is 0.382V min and 1.12V max
- smps8 is fixed at 0.752V
Could you please comment whether your values represent the min/max
supported by the regulators themselves or the shared min/max by all the
devices powered by the corresponding regulator?
values represent the min/max supported by the regulators themselves
Fixes: d1f2cfe2f669 ("arm64: dts: qcom: Add base QDU1000/QRU1000 IDP DTs")
Signed-off-by: Komal Bajaj <quic_kbajaj@xxxxxxxxxxx>
---
Changes in v3 -
* Minor nit pick in commit message
* Link to v2: https://lore.kernel.org/all/20240524082236.24112-1-quic_kbajaj@xxxxxxxxxxx/
Changes in v2-
* Updated the commit message as suggested by Krzysztof
* Link to v1: https://lore.kernel.org/linux-arm-msm/20240514131038.28036-1-quic_kbajaj@xxxxxxxxxxx/
---
arch/arm64/boot/dts/qcom/qdu1000-idp.dts | 16 ++++++++--------
arch/arm64/boot/dts/qcom/qru1000-idp.dts | 16 ++++++++--------
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/qdu1000-idp.dts b/arch/arm64/boot/dts/qcom/qdu1000-idp.dts
index e65305f8136c..6e8f9007068b 100644
--- a/arch/arm64/boot/dts/qcom/qdu1000-idp.dts
+++ b/arch/arm64/boot/dts/qcom/qdu1000-idp.dts
@@ -96,20 +96,20 @@ vreg_s3a_1p05: smps3 {
vreg_s4a_1p8: smps4 {
regulator-name = "vreg_s4a_1p8";
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1574000>;
+ regulator-max-microvolt = <2040000>;
};
vreg_s5a_2p0: smps5 {
regulator-name = "vreg_s5a_2p0";
- regulator-min-microvolt = <1904000>;
- regulator-max-microvolt = <2000000>;
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1400000>;
Having 2.0 V regulator with the range of 1.2V - 1.4V is strange.
The configuration for this regulator was incorrectly set, as its nominal
range is 1.2 V.
There was no scenario utilizing this regulator, but we discovered this
misconfiguration while enabling USB.
};
vreg_s6a_0p9: smps6 {
regulator-name = "vreg_s6a_0p9";
- regulator-min-microvolt = <920000>;
- regulator-max-microvolt = <1128000>;
+ regulator-min-microvolt = <382000>;
+ regulator-max-microvolt = <1120000>;
The same applies to this regulator, 0.9V usually can not go to 0.382 V
and still let the devices to continue working.
This regulator supports a minimum voltage, but it won't actually drop to
that level. The previous voltage values did not align with the Power Grid.
};
vreg_s7a_1p2: smps7 {
@@ -120,8 +120,8 @@ vreg_s7a_1p2: smps7 {
vreg_s8a_1p3: smps8 {
regulator-name = "vreg_s8a_1p3";
- regulator-min-microvolt = <1352000>;
- regulator-max-microvolt = <1352000>;
+ regulator-min-microvolt = <752000>;
+ regulator-max-microvolt = <752000>;
1.3V at 0.752V?
same applies here as well.
Thanks
Komal
};
vreg_l1a_0p91: ldo1 {
diff --git a/arch/arm64/boot/dts/qcom/qru1000-idp.dts b/arch/arm64/boot/dts/qcom/qru1000-idp.dts
index 1c781d9e24cf..8b0ddc187ca0 100644
--- a/arch/arm64/boot/dts/qcom/qru1000-idp.dts
+++ b/arch/arm64/boot/dts/qcom/qru1000-idp.dts
@@ -96,20 +96,20 @@ vreg_s3a_1p05: smps3 {
vreg_s4a_1p8: smps4 {
regulator-name = "vreg_s4a_1p8";
- regulator-min-microvolt = <1800000>;
- regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1574000>;
+ regulator-max-microvolt = <2040000>;
};
vreg_s5a_2p0: smps5 {
regulator-name = "vreg_s5a_2p0";
- regulator-min-microvolt = <1904000>;
- regulator-max-microvolt = <2000000>;
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1400000>;
};
vreg_s6a_0p9: smps6 {
regulator-name = "vreg_s6a_0p9";
- regulator-min-microvolt = <920000>;
- regulator-max-microvolt = <1128000>;
+ regulator-min-microvolt = <382000>;
+ regulator-max-microvolt = <1120000>;
};
vreg_s7a_1p2: smps7 {
@@ -120,8 +120,8 @@ vreg_s7a_1p2: smps7 {
vreg_s8a_1p3: smps8 {
regulator-name = "vreg_s8a_1p3";
- regulator-min-microvolt = <1352000>;
- regulator-max-microvolt = <1352000>;
+ regulator-min-microvolt = <752000>;
+ regulator-max-microvolt = <752000>;
};
vreg_l1a_0p91: ldo1 {
--
2.46.0
