Re: [PATCH] arm64: tegra: Fix PCIe regulator for Orin Jetson AGX

[Jon Hunter]

On 26/05/2023 12:19, Jon Hunter wrote:
> Adding linux-tegra ...
>
> On 26/05/2023 12:17, Jon Hunter wrote:
> > The PCIe slot on the Jetson Orin AGX is not working and PCIe cards
> > are not detected. The regulator for the 3.3V regulator for the PCIe is
> > using the wrong GPIO for turning on the regulator. Fix this by updating
> > the 3.3V regulator to use the correct GPIO.
> >
> > Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
> > ---
> >   arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi 
> > b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
> > index e161618cfca8..4dce2e214002 100644
> > --- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
> > +++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
> > @@ -142,7 +142,7 @@ vdd_3v3_pcie: regulator-vdd-3v3-pcie {
> >           regulator-name = "VDD_3V3_PCIE";
> >           regulator-min-microvolt = <3300000>;
> >           regulator-max-microvolt = <3300000>;
> > -        gpio = <&gpio TEGRA234_MAIN_GPIO(Z, 2) GPIO_ACTIVE_HIGH>;
> > +        gpio = <&gpio TEGRA234_MAIN_GPIO(H, 4) GPIO_ACTIVE_HIGH>;


Apparently the original GPIO we had was for pre-production boards and 
hence the mistake was made. Let me know if you want me to add that 
detail to the commit message.

Jon

--
nvpublic