Re: [PATCH v2] arm64: dts: qcom: kodiak: Move PCIe GPIOs and PHYs to root ports
From: Dmitry Baryshkov
Date: Sun Jun 07 2026 - 03:51:16 EST
On Sun, Jun 07, 2026 at 12:17:26PM +0800, Hongyang Zhao wrote:
> The Qualcomm PCIe binding deprecates perst-gpios and wake-gpios
> on the host bridge and expects board reset and wake GPIOs to be
> described on the root port. PERST# is described there as
> reset-gpios.
>
> Move the PCIe PHY references in kodiak.dtsi to the PCIe0 and PCIe1
> root port nodes, and move the board-specific PCIe reset and wake
> GPIOs in the Kodiak DTs to the corresponding root ports.
>
> Keep the PHY and GPIO resources on the same root port nodes so the
> Qualcomm PCIe driver can parse the root port binding instead of
> falling back to the legacy host bridge GPIO parsing.
>
> Signed-off-by: Hongyang Zhao <hongyang.zhao@xxxxxxxxxxxxxxx>
> ---
> Refresh Kodiak PCIe descriptions to match the current Qualcomm
> PCIe binding guidance.
>
> The series moves PCIe PHY references from the host bridge nodes to
> the root port nodes in kodiak.dtsi. It also moves all Kodiak board
> PERST# and WAKE# GPIO descriptions from host bridge nodes to the
> corresponding root ports, using reset-gpios for PERST#.
>
> Changes in v2:
> - Refresh all Kodiak DTs instead of only the Thundercomm RubikPi3.
> - Move PCIe PHY references to the root port nodes together with the
> reset and wake GPIOs.
> ---
> arch/arm64/boot/dts/qcom/kodiak.dtsi | 10 ++++------
> arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts | 14 +++++++++-----
> arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts | 16 ++++++++++------
> arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 4 ++--
> .../boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts | 14 ++++++++------
> .../arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 16 ++++++++++------
> arch/arm64/boot/dts/qcom/sc7280-idp.dtsi | 5 ++++-
> 7 files changed, 47 insertions(+), 32 deletions(-)
>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
--
With best wishes
Dmitry