Re: [PATCH 4/4] arm64: dts: qcom: sm6375-pdx225: Add USBPHY regulators

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On 27/09/2023 12:05, Konrad Dybcio wrote:
On 27.09.2023 13:01, Bryan O'Donoghue wrote:
On 27/09/2023 10:21, Konrad Dybcio wrote:
To make dtbs_check happy and the software more aware of what's going
on, describe the HSUSB PHY's regulators and tighten up VDDA_PLL to match.

Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
   arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts | 7 +++++--
   1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts b/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
index bbec7aee60be..0ce4fa8de8b0 100644
--- a/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
+++ b/arch/arm64/boot/dts/qcom/sm6375-sony-xperia-murray-pdx225.dts
@@ -243,8 +243,8 @@ pm6125_l6: l6 {
           };
             pm6125_l7: l7 {
-            regulator-min-microvolt = <720000>;
-            regulator-max-microvolt = <1050000>;
+            regulator-min-microvolt = <880000>;
+            regulator-max-microvolt = <880000>;

Where did the old values come from and why are the new values better ?

Consider enumerating that in the commit log.
That's the pretty standard situation where:

- downstream defines very loose ranges
- developer uses these very loose ranges as a guideline
- some hardware (often the exclusive user of that regulator)
   has a hidden-ish request of a tighter range
- the developer realizes that and has to fix up the ranges

Konrad

If you got 72 and 105 from downstream, where did you get 88 from ?

---
bod




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