Re: [PATCH 2/3] arm64: dts: qcom: eliza-evk: Add PCIe1 with TC9563 PCIe switch
From: Xilin Wu
Date: Mon Jul 06 2026 - 03:03:21 EST
On 7/6/2026 1:24 PM, Krishna Chaitanya Chundru wrote:
On 7/4/2026 9:37 AM, Xilin Wu wrote:
On 7/3/2026 8:38 PM, Krishna Chaitanya Chundru wrote:one of the driver will fail as both are different drivers both are requesting
The Eliza EVK board connects PCIe1 (8GT/s x2) to a Toshiba TC9563
PCIe switch. Enable PCIe1 and its QMP PHY nodes.
TC9563 uses I2C (at address 0x77 on I2C4) for its management interface.
Override the base iommu-map with the expanded set covering all the
switch's downstream ports (0x1400-0x1408 SID range).
The TC9563 RESX# and PERST# are OR-ed internally to assert reset on the
switch. Use TC9563 RESX# pin via a TLMM GPIO and skip wiring PERST#
from the PCIe controller.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/eliza-evk.dtsi | 141
++++++++++++++++++++++++++++++++
1 file changed, 141 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/eliza-evk.dtsi
b/arch/arm64/boot/dts/qcom/eliza-evk.dtsi
index ba41dbc34b81..c2afb8372ab7 100644
--- a/arch/arm64/boot/dts/qcom/eliza-evk.dtsi
+++ b/arch/arm64/boot/dts/qcom/eliza-evk.dtsi
@@ -12,6 +12,26 @@ chosen {
stdout-path = "serial0:115200n8";
};
+ vreg_0p9: regulator-0v9 {
+ compatible = "regulator-fixed";
+ regulator-name = "VREG_0P9";
+
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
+ vreg_1p8: regulator-1v8 {
+ compatible = "regulator-fixed";
+ regulator-name = "VREG_1P8";
+
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+
vreg_pcie_m_3p3: regulator-3p3 {
compatible = "regulator-fixed";
@@ -102,6 +122,104 @@ pcieport0_ep: endpoint {
};
};
+&pcie1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pcie1_default_state>;
+
+ iommu-map = <0x0 &apps_smmu 0x1400 0x1>,
+ <0x100 &apps_smmu 0x1401 0x1>,
+ <0x208 &apps_smmu 0x1402 0x1>,
+ <0x210 &apps_smmu 0x1403 0x1>,
+ <0x218 &apps_smmu 0x1404 0x1>,
+ <0x300 &apps_smmu 0x1405 0x1>,
+ <0x400 &apps_smmu 0x1406 0x1>,
+ <0x500 &apps_smmu 0x1407 0x1>,
+ <0x501 &apps_smmu 0x1408 0x1>;
+
+ status = "okay";
+};
+
+&pcie1_phy {
+ vdda-phy-supply = <&vreg_l1k>;
+ vdda-pll-supply = <&vreg_l3k>;
+
+ status = "okay";
+};
+
+&pcie1port0 {
+ wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
+
Just wondering, is there any side effect if PERST# is described here as well?
same GPIO.
- Krishna Chaitanya.
Ah the board is using the same GPIO for TC9563 RESX# and PERST#. I see. Thanks!
--
Best regards,
Xilin Wu <sophon@xxxxxxxxx>