linux-kernel - [PATCH v5] arm64: dts: qcom: sa8540p-ride: enable pcie2a node

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Message-ID: <20221213095922.11649-1-quic_shazhuss@quicinc.com>
Date:   Tue, 13 Dec 2022 15:29:21 +0530
From:   Shazad Hussain <quic_shazhuss@...cinc.com>
To:     <andersson@...nel.org>, <johan@...nel.org>
CC:     <bmasney@...hat.com>, Shazad Hussain <quic_shazhuss@...cinc.com>,
        "Andy Gross" <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v5] arm64: dts: qcom: sa8540p-ride: enable pcie2a node

Add the pcie2a, pcie2a_phy, and respective tlmm nodes that are needed to
get pcie 2a controller enabled on Qdrive3.

This patch enables 4GB 64bit memory space for PCIE_2A to have BAR
allocations of 64bit pref mem needed on this Qdrive3 platform with dual
SoCs for root port and switch NT-EP. Hence this ranges property is
overridden in sa8540p-ride.dts only.

Moved tlmm node at the end as it tends to become rahter long.

Link: https://lore.kernel.org/lkml/Y49k1k8ayI9%2FrK+R@hovoldconsulting.com/
Signed-off-by: Shazad Hussain <quic_shazhuss@...cinc.com>
Reviewed-by: Brian Masney <bmasney@...hat.com>
---
Changes since v4:
- Drop Reported-by robot (Krzysztof)
- Allign commit message and link for moving tlmm at the end (Johan)

Changes since v3:
- Fix syntax error and add Reported-by (Kernel test robot)

Changes since v2:
- Discard below patch as v3 is merged in qcom tree
  [v4] arm64: dts: qcom: sa8540p-ride: enable PCIe support
  https://lore.kernel.org/all/20221206161916.315640-1-bmasney@redhat.com/
- Move tlmm PINCTRL to the end and add R-b (Brian)

Changes since v1:
- Fix ranges property indentation (Konrad)

 arch/arm64/boot/dts/qcom/sa8540p-ride.dts | 96 +++++++++++++++++------
 1 file changed, 71 insertions(+), 25 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
index 6c547f1b13dc..d70859803fbd 100644
--- a/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
+++ b/arch/arm64/boot/dts/qcom/sa8540p-ride.dts
@@ -146,6 +146,27 @@ vreg_l8g: ldo8 {
 	};
 };
 
+&pcie2a {
+	ranges = <0x01000000 0x0 0x3c200000 0x0 0x3c200000 0x0 0x100000>,
+		 <0x02000000 0x0 0x3c300000 0x0 0x3c300000 0x0 0x1d00000>,
+		 <0x03000000 0x5 0x00000000 0x5 0x00000000 0x1 0x00000000>;
+
+	perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 145 GPIO_ACTIVE_HIGH>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie2a_default>;
+
+	status = "okay";
+};
+
+&pcie2a_phy {
+	vdda-phy-supply = <&vreg_l11a>;
+	vdda-pll-supply = <&vreg_l3a>;
+
+	status = "okay";
+};
+
 &pcie3a {
 	ranges = <0x01000000 0x0 0x40200000 0x0 0x40200000 0x0 0x100000>,
 		 <0x02000000 0x0 0x40300000 0x0 0x40300000 0x0 0x20000000>,
@@ -186,31 +207,6 @@ &remoteproc_nsp1 {
 	status = "okay";
 };
 
-&tlmm {
-	pcie3a_default: pcie3a-default-state {
-		perst-pins {
-			pins = "gpio151";
-			function = "gpio";
-			drive-strength = <2>;
-			bias-pull-down;
-		};
-
-		clkreq-pins {
-			pins = "gpio150";
-			function = "pcie3a_clkreq";
-			drive-strength = <2>;
-			bias-pull-up;
-		};
-
-		wake-pins {
-			pins = "gpio56";
-			function = "gpio";
-			drive-strength = <2>;
-			bias-pull-up;
-		};
-	};
-};
-
 &ufs_mem_hc {
 	reset-gpios = <&tlmm 228 GPIO_ACTIVE_LOW>;
 
@@ -268,3 +264,53 @@ &usb_2_qmpphy0 {
 &xo_board_clk {
 	clock-frequency = <38400000>;
 };
+
+/* PINCTRL */
+
+&tlmm {
+	pcie2a_default: pcie2a-default-state {
+		perst-pins {
+			pins = "gpio143";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		clkreq-pins {
+			pins = "gpio142";
+			function = "pcie2a_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		wake-pins {
+			pins = "gpio145";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	pcie3a_default: pcie3a-default-state {
+		perst-pins {
+			pins = "gpio151";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		clkreq-pins {
+			pins = "gpio150";
+			function = "pcie3a_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		wake-pins {
+			pins = "gpio56";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+};
-- 
2.38.0