[PATCH v2 00/13] Add PCIe RC support to Qcom SDX55 SoC

[PATCH v2 00/13] Add PCIe RC support to Qcom SDX55 SoC

[Manivannan Sadhasivam]

Hi,

This series adds PCIe RC support to the Qcom SDX55 SoC. The PCIe controller
in SDX55 can act as both Root Complex and Endpoint but only one mode at a
time i.e., the mode cannot be switched during runtime.

This series has been tested on Thundercomm T55 board having QCA6390 WLAN
chipset connected to the PCIe controller. For powering up the WLAN chipset,
an out-of-tree patch has been used since we do not have a proper driver in
mainline to handle the power supplies.

NOTE: Even with this series, I couldn't get network connectivity using
QCA6390. But that's due to ath11k regression for which I've filed a bug
report: https://bugzilla.kernel.org/show_bug.cgi?id=217070

Merging strategy
----------------

PCI and binding patches through PCI tree
PHY patches through PHY tree
Devicetree patches through Qcom tree

Thanks,
Mani

Changes in v2:

* Added patche to move status property down
* Added patch to list property values vertically
* Addressed comments from Konrad
* Collected review tags
* Fixed review tag for dts patch

Manivannan Sadhasivam (13):
  dt-bindings: PCI: qcom: Update maintainers entry
  dt-bindings: PCI: qcom: Add iommu properties
  dt-bindings: PCI: qcom: Add SDX55 SoC
  dt-bindings: PCI: qcom-ep: Fix the unit address used in example
  ARM: dts: qcom: sdx55: Fix the unit address of PCIe EP node
  ARM: dts: qcom: sdx55: Rename pcie0_{phy/lane} to pcie_{phy/lane}
  ARM: dts: qcom: sdx55: Add support for PCIe RC controller
  ARM: dts: qcom: sdx55: List the property values vertically
  ARM: dts: qcom: sdx55-t55: Enable PCIe RC support
  ARM: dts: qcom: sdx55-t55: Move "status" property down
  phy: qcom-qmp-pcie: Split out EP related init sequence for SDX55
  phy: qcom-qmp-pcie: Add RC init sequence for SDX55
  PCI: qcom: Add support for SDX55 SoC

 .../devicetree/bindings/pci/qcom,pcie-ep.yaml |   2 +-
 .../devicetree/bindings/pci/qcom,pcie.yaml    |  35 +++-
 arch/arm/boot/dts/qcom-sdx55-t55.dts          |  53 +++++-
 .../boot/dts/qcom-sdx55-telit-fn980-tlb.dts   |   2 +-
 arch/arm/boot/dts/qcom-sdx55.dtsi             | 179 ++++++++++++++----
 drivers/pci/controller/dwc/pcie-qcom.c        |   4 +-
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c      |  91 +++++++--
 .../qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h    |   2 +
 8 files changed, 303 insertions(+), 65 deletions(-)

-- 
2.25.1

[PATCH v2 01/13] dt-bindings: PCI: qcom: Update maintainers entry

[Manivannan Sadhasivam]

Stan is no longer working with MMSOL and expressed his interest to not
continue maintaining Qcom PCIe driver. Since I took over the driver
maintainership, I'm stepping in to maintain the binding also.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index a5859bb3dc28..a3639920fcbb 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -8,7 +8,7 @@ title: Qualcomm PCI express root complex
 
 maintainers:
   - Bjorn Andersson <bjorn.andersson@linaro.org>
-  - Stanimir Varbanov <svarbanov@mm-sol.com>
+  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
 
 description: |
   Qualcomm PCIe root complex controller is based on the Synopsys DesignWare
-- 
2.25.1

[PATCH v2 02/13] dt-bindings: PCI: qcom: Add iommu properties

[Manivannan Sadhasivam]

Most of the PCIe controllers require iommu support to function properly.
So let's add them to the binding.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index a3639920fcbb..f48d0792aa57 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -64,6 +64,11 @@ properties:
 
   dma-coherent: true
 
+  iommus:
+    maxItems: 1
+
+  iommu-map: true
+
   interconnects:
     maxItems: 2
 
-- 
2.25.1

[PATCH v2 03/13] dt-bindings: PCI: qcom: Add SDX55 SoC

[Manivannan Sadhasivam]

Add support for the PCIe controller on the Qcom SDX55 SoC to the binding.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 .../devicetree/bindings/pci/qcom,pcie.yaml    | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index f48d0792aa57..3bba1ef3cff5 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -30,6 +30,7 @@ properties:
       - qcom,pcie-sc8180x
       - qcom,pcie-sc8280xp
       - qcom,pcie-sdm845
+      - qcom,pcie-sdx55
       - qcom,pcie-sm8150
       - qcom,pcie-sm8250
       - qcom,pcie-sm8450-pcie0
@@ -199,6 +200,7 @@ allOf:
               - qcom,pcie-sc7280
               - qcom,pcie-sc8180x
               - qcom,pcie-sc8280xp
+              - qcom,pcie-sdx55
               - qcom,pcie-sm8250
               - qcom,pcie-sm8450-pcie0
               - qcom,pcie-sm8450-pcie1
@@ -646,6 +648,32 @@ allOf:
           items:
             - const: pci # PCIe core reset
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sdx55
+    then:
+      properties:
+        clocks:
+          minItems: 7
+          maxItems: 7
+        clock-names:
+          items:
+            - const: pipe # PIPE clock
+            - const: aux # Auxiliary clock
+            - const: cfg # Configuration clock
+            - const: bus_master # Master AXI clock
+            - const: bus_slave # Slave AXI clock
+            - const: slave_q2a # Slave Q2A clock
+            - const: sleep # PCIe Sleep clock
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+
   - if:
       properties:
         compatible:
-- 
2.25.1

[PATCH v2 04/13] dt-bindings: PCI: qcom-ep: Fix the unit address used in example

[Manivannan Sadhasivam]

Unit address of PCIe EP node should be 0x1c00000 as it has to match the
first address specified in the reg property.

Fixes: 31c9ef002580 ("dt-bindings: PCI: Add Qualcomm PCIe Endpoint controller")
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
index 8d7eb51edcb4..c1800e44f3da 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
@@ -164,7 +164,7 @@ examples:
     #include <dt-bindings/clock/qcom,gcc-sdx55.h>
     #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
-    pcie_ep: pcie-ep@40000000 {
+    pcie_ep: pcie-ep@1c00000 {
         compatible = "qcom,sdx55-pcie-ep";
         reg = <0x01c00000 0x3000>,
               <0x40000000 0xf1d>,
-- 
2.25.1

[PATCH v2 05/13] ARM: dts: qcom: sdx55: Fix the unit address of PCIe EP node

[Manivannan Sadhasivam]

Unit address of PCIe EP node should be 0x1c00000 as it has to match the
first address specified in the reg property.

This also requires sorting the node in the ascending order.

Fixes: e6b69813283f ("ARM: dts: qcom: sdx55: Add support for PCIe EP")
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55.dtsi | 78 +++++++++++++++----------------
 1 file changed, 39 insertions(+), 39 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index 93d71aff3fab..e84ca795cae6 100644
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -303,6 +303,45 @@ qpic_nand: nand-controller@1b30000 {
 			status = "disabled";
 		};
 
+		pcie_ep: pcie-ep@1c00000 {
+			compatible = "qcom,sdx55-pcie-ep";
+			reg = <0x01c00000 0x3000>,
+			      <0x40000000 0xf1d>,
+			      <0x40000f20 0xc8>,
+			      <0x40001000 0x1000>,
+			      <0x40200000 0x100000>,
+			      <0x01c03000 0x3000>;
+			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
+				    "mmio";
+
+			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
+
+			clocks = <&gcc GCC_PCIE_AUX_CLK>,
+				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLEEP_CLK>,
+				 <&gcc GCC_PCIE_0_CLKREF_CLK>;
+			clock-names = "aux", "cfg", "bus_master", "bus_slave",
+				      "slave_q2a", "sleep", "ref";
+
+			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "global", "doorbell";
+			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
+			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
+			resets = <&gcc GCC_PCIE_BCR>;
+			reset-names = "core";
+			power-domains = <&gcc PCIE_GDSC>;
+			phys = <&pcie0_lane>;
+			phy-names = "pciephy";
+			max-link-speed = <3>;
+			num-lanes = <2>;
+
+			status = "disabled";
+		};
+
 		pcie0_phy: phy@1c07000 {
 			compatible = "qcom,sdx55-qmp-pcie-phy";
 			reg = <0x01c07000 0x1c4>;
@@ -400,45 +439,6 @@ sdhc_1: mmc@8804000 {
 			status = "disabled";
 		};
 
-		pcie_ep: pcie-ep@40000000 {
-			compatible = "qcom,sdx55-pcie-ep";
-			reg = <0x01c00000 0x3000>,
-			      <0x40000000 0xf1d>,
-			      <0x40000f20 0xc8>,
-			      <0x40001000 0x1000>,
-			      <0x40200000 0x100000>,
-			      <0x01c03000 0x3000>;
-			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
-				    "mmio";
-
-			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
-
-			clocks = <&gcc GCC_PCIE_AUX_CLK>,
-				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
-				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
-				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
-				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
-				 <&gcc GCC_PCIE_SLEEP_CLK>,
-				 <&gcc GCC_PCIE_0_CLKREF_CLK>;
-			clock-names = "aux", "cfg", "bus_master", "bus_slave",
-				      "slave_q2a", "sleep", "ref";
-
-			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
-				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "global", "doorbell";
-			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
-			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
-			resets = <&gcc GCC_PCIE_BCR>;
-			reset-names = "core";
-			power-domains = <&gcc PCIE_GDSC>;
-			phys = <&pcie0_lane>;
-			phy-names = "pciephy";
-			max-link-speed = <3>;
-			num-lanes = <2>;
-
-			status = "disabled";
-		};
-
 		remoteproc_mpss: remoteproc@4080000 {
 			compatible = "qcom,sdx55-mpss-pas";
 			reg = <0x04080000 0x4040>;
-- 
2.25.1

[PATCH v2 06/13] ARM: dts: qcom: sdx55: Rename pcie0_{phy/lane} to pcie_{phy/lane}

[Manivannan Sadhasivam]

There is only one PCIe PHY in this SoC, so there is no need to add an
index to the suffix. This also matches the naming convention of the PCIe
controller.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts | 2 +-
 arch/arm/boot/dts/qcom-sdx55.dtsi                | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts b/arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts
index ac8b4626ae9a..b7ee0237608f 100644
--- a/arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts
+++ b/arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts
@@ -242,7 +242,7 @@ &ipa {
 	memory-region = <&ipa_fw_mem>;
 };
 
-&pcie0_phy {
+&pcie_phy {
 	status = "okay";
 
 	vdda-phy-supply = <&vreg_l1e_bb_1p2>;
diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index e84ca795cae6..a1f4a7b0904a 100644
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -334,7 +334,7 @@ pcie_ep: pcie-ep@1c00000 {
 			resets = <&gcc GCC_PCIE_BCR>;
 			reset-names = "core";
 			power-domains = <&gcc PCIE_GDSC>;
-			phys = <&pcie0_lane>;
+			phys = <&pcie_lane>;
 			phy-names = "pciephy";
 			max-link-speed = <3>;
 			num-lanes = <2>;
@@ -342,7 +342,7 @@ pcie_ep: pcie-ep@1c00000 {
 			status = "disabled";
 		};
 
-		pcie0_phy: phy@1c07000 {
+		pcie_phy: phy@1c07000 {
 			compatible = "qcom,sdx55-qmp-pcie-phy";
 			reg = <0x01c07000 0x1c4>;
 			#address-cells = <1>;
@@ -362,7 +362,7 @@ pcie0_phy: phy@1c07000 {
 
 			status = "disabled";
 
-			pcie0_lane: lanes@1c06000 {
+			pcie_lane: lanes@1c06000 {
 				reg = <0x01c06000 0x104>, /* tx0 */
 				      <0x01c06200 0x328>, /* rx0 */
 				      <0x01c07200 0x1e8>, /* pcs */
-- 
2.25.1

[PATCH v2 07/13] ARM: dts: qcom: sdx55: Add support for PCIe RC controller

[Manivannan Sadhasivam]

The PCIe controller in SDX55 can act as the RC controller also. Let's
add support for it.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55.dtsi | 82 +++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index a1f4a7b0904a..b411c4ae34c3 100644
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -303,6 +303,88 @@ qpic_nand: nand-controller@1b30000 {
 			status = "disabled";
 		};
 
+		pcie_rc: pcie@1c00000 {
+			compatible = "qcom,pcie-sdx55";
+			reg = <0x01c00000 0x3000>,
+			      <0x40000000 0xf1d>,
+			      <0x40000f20 0xc8>,
+			      <0x40001000 0x1000>,
+			      <0x40100000 0x100000>;
+			reg-names = "parf",
+				    "dbi",
+				    "elbi",
+				    "atu",
+				    "config";
+			device_type = "pci";
+			linux,pci-domain = <0>;
+			bus-range = <0x00 0xff>;
+			num-lanes = <1>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			ranges = <0x01000000 0x0 0x40200000 0x40200000 0x0 0x100000>,
+				 <0x02000000 0x0 0x40300000 0x40300000 0x0 0x3fd00000>;
+
+			interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi",
+					  "msi2",
+					  "msi3",
+					  "msi4",
+					  "msi5",
+					  "msi6",
+					  "msi7",
+					  "msi8";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 0 0 141 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+					<0 0 0 2 &intc 0 0 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+					<0 0 0 3 &intc 0 0 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+					<0 0 0 4 &intc 0 0 0 144 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+			clocks = <&gcc GCC_PCIE_PIPE_CLK>,
+				 <&gcc GCC_PCIE_AUX_CLK>,
+				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLEEP_CLK>;
+			clock-names = "pipe",
+				      "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "sleep";
+
+			assigned-clocks = <&gcc GCC_PCIE_AUX_CLK>;
+			assigned-clock-rates = <19200000>;
+
+			iommus = <&apps_smmu 0x0200 0x0f>;
+			iommu-map = <0x0   &apps_smmu 0x0200 0x1>,
+				    <0x100 &apps_smmu 0x0201 0x1>,
+				    <0x200 &apps_smmu 0x0202 0x1>,
+				    <0x300 &apps_smmu 0x0203 0x1>,
+				    <0x400 &apps_smmu 0x0204 0x1>;
+
+			resets = <&gcc GCC_PCIE_BCR>;
+			reset-names = "pci";
+
+			power-domains = <&gcc PCIE_GDSC>;
+
+			phys = <&pcie_lane>;
+			phy-names = "pciephy";
+
+			status = "disabled";
+		};
+
 		pcie_ep: pcie-ep@1c00000 {
 			compatible = "qcom,sdx55-pcie-ep";
 			reg = <0x01c00000 0x3000>,
-- 
2.25.1

[PATCH v2 08/13] ARM: dts: qcom: sdx55: List the property values vertically

[Manivannan Sadhasivam]

To align with the rest of the devicetree files and the relative properties,
let's list the values of properties such as {reg/clock/interrupt}-names
vertically.

Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55.dtsi | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index b411c4ae34c3..61fdd601fc26 100644
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -393,7 +393,11 @@ pcie_ep: pcie-ep@1c00000 {
 			      <0x40001000 0x1000>,
 			      <0x40200000 0x100000>,
 			      <0x01c03000 0x3000>;
-			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
+			reg-names = "parf",
+				    "dbi",
+				    "elbi",
+				    "atu",
+				    "addr_space",
 				    "mmio";
 
 			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
@@ -405,12 +409,18 @@ pcie_ep: pcie-ep@1c00000 {
 				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
 				 <&gcc GCC_PCIE_SLEEP_CLK>,
 				 <&gcc GCC_PCIE_0_CLKREF_CLK>;
-			clock-names = "aux", "cfg", "bus_master", "bus_slave",
-				      "slave_q2a", "sleep", "ref";
+			clock-names = "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "sleep",
+				      "ref";
 
 			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "global", "doorbell";
+			interrupt-names = "global",
+					  "doorbell";
 			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
 			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
 			resets = <&gcc GCC_PCIE_BCR>;
@@ -434,7 +444,10 @@ pcie_phy: phy@1c07000 {
 				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
 				 <&gcc GCC_PCIE_0_CLKREF_CLK>,
 				 <&gcc GCC_PCIE_RCHNG_PHY_CLK>;
-			clock-names = "aux", "cfg_ahb", "ref", "refgen";
+			clock-names = "aux",
+				      "cfg_ahb",
+				      "ref",
+				      "refgen";
 
 			resets = <&gcc GCC_PCIE_PHY_BCR>;
 			reset-names = "phy";
-- 
2.25.1

[PATCH v2 09/13] ARM: dts: qcom: sdx55-t55: Enable PCIe RC support

[Manivannan Sadhasivam]

Enable PCIe RC support on Thundercomm T55 board.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55-t55.dts | 42 ++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx55-t55.dts b/arch/arm/boot/dts/qcom-sdx55-t55.dts
index 7ed8feb99afb..6339af791b0b 100644
--- a/arch/arm/boot/dts/qcom-sdx55-t55.dts
+++ b/arch/arm/boot/dts/qcom-sdx55-t55.dts
@@ -242,6 +242,23 @@ &ipa {
 	memory-region = <&ipa_fw_mem>;
 };
 
+&pcie_phy {
+	vdda-phy-supply = <&vreg_l1e_bb_1p2>;
+	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
+
+	status = "okay";
+};
+
+&pcie_rc {
+	perst-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
+	wake-gpios = <&tlmm 53 GPIO_ACTIVE_HIGH>;
+
+	pinctrl-0 = <&pcie_default>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
 &qpic_bam {
 	status = "ok";
 };
@@ -265,6 +282,31 @@ &remoteproc_mpss {
 	memory-region = <&mpss_adsp_mem>;
 };
 
+&tlmm {
+	pcie_default: pcie-default-state {
+		clkreq-pins {
+			pins = "gpio56";
+			function = "pcie_clkreq";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		perst-pins {
+			pins = "gpio57";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		wake-pins {
+		       pins = "gpio53";
+		       function = "gpio";
+		       drive-strength = <2>;
+		       bias-pull-up;
+	       };
+	};
+};
+
 &usb_hsphy {
 	status = "okay";
 	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
-- 
2.25.1

[PATCH v2 10/13] ARM: dts: qcom: sdx55-t55: Move "status" property down

[Manivannan Sadhasivam]

To align with rest of the devicetree files, let's move the "status"
property down

Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 arch/arm/boot/dts/qcom-sdx55-t55.dts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/qcom-sdx55-t55.dts b/arch/arm/boot/dts/qcom-sdx55-t55.dts
index 6339af791b0b..67e366700105 100644
--- a/arch/arm/boot/dts/qcom-sdx55-t55.dts
+++ b/arch/arm/boot/dts/qcom-sdx55-t55.dts
@@ -237,9 +237,9 @@ &blsp1_uart3 {
 };
 
 &ipa {
-	status = "okay";
-
 	memory-region = <&ipa_fw_mem>;
+
+	status = "okay";
 };
 
 &pcie_phy {
@@ -278,8 +278,9 @@ nand@0 {
 };
 
 &remoteproc_mpss {
-	status = "okay";
 	memory-region = <&mpss_adsp_mem>;
+
+	status = "okay";
 };
 
 &tlmm {
@@ -308,16 +309,18 @@ wake-pins {
 };
 
 &usb_hsphy {
-	status = "okay";
 	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
 	vdda33-supply = <&vreg_l10e_3p1>;
 	vdda18-supply = <&vreg_l5e_bb_1p7>;
+
+	status = "okay";
 };
 
 &usb_qmpphy {
-	status = "okay";
 	vdda-phy-supply = <&vreg_l4e_bb_0p875>;
 	vdda-pll-supply = <&vreg_l1e_bb_1p2>;
+
+	status = "okay";
 };
 
 &usb {
-- 
2.25.1

[PATCH v2 11/13] phy: qcom-qmp-pcie: Split out EP related init sequence for SDX55

[Manivannan Sadhasivam]

In preparation for adding RC support, let's split out the EP related init
sequence so that the common sequence could be reused by RC as well.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 42 ++++++++++++++++--------
 1 file changed, 28 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 1b136a87053f..f526f73f76ef 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -1122,10 +1122,25 @@ static const struct qmp_phy_init_tbl sm8250_qmp_gen3x2_pcie_pcs_misc_tbl[] = {
 };
 
 static const struct qmp_phy_init_tbl sdx55_qmp_pcie_serdes_tbl[] = {
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BG_TIMER, 0x02),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIAS_EN_CLKBUFLR_EN, 0x18),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SYS_CLK_CTRL, 0x07),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_IVCO, 0x0f),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP_EN, 0x46),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP_CFG, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_VCO_TUNE_MAP, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_HSCLK_SEL, 0x12),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_HSCLK_HS_SWITCH_SEL, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CORECLK_DIV_MODE0, 0x05),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CORECLK_DIV_MODE1, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MISC1, 0x88),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MISC2, 0x03),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MODE, 0x17),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_VCO_DC_LEVEL_CTRL, 0x0b),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_HSCLK_SEL, 0x22),
+};
+
+static const struct qmp_phy_init_tbl sdx55_qmp_pcie_ep_serdes_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BG_TIMER, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SYS_CLK_CTRL, 0x07),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CP_CTRL_MODE0, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CP_CTRL_MODE1, 0x0a),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_RCTRL_MODE0, 0x19),
@@ -1133,8 +1148,6 @@ static const struct qmp_phy_init_tbl sdx55_qmp_pcie_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_CCTRL_MODE0, 0x03),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_CCTRL_MODE1, 0x03),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SYSCLK_EN_SEL, 0x00),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP_EN, 0x46),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP_CFG, 0x04),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP1_MODE0, 0x7f),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP2_MODE0, 0x02),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP1_MODE1, 0xff),
@@ -1146,21 +1159,11 @@ static const struct qmp_phy_init_tbl sdx55_qmp_pcie_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_INTEGLOOP_GAIN1_MODE0, 0x01),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_INTEGLOOP_GAIN0_MODE1, 0xfb),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_INTEGLOOP_GAIN1_MODE1, 0x01),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_VCO_TUNE_MAP, 0x02),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_HSCLK_SEL, 0x12),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_HSCLK_HS_SWITCH_SEL, 0x00),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CORECLK_DIV_MODE0, 0x05),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CORECLK_DIV_MODE1, 0x04),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_CONFIG, 0x04),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MISC1, 0x88),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MISC2, 0x03),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CMN_MODE, 0x17),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_VCO_DC_LEVEL_CTRL, 0x0b),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0x56),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1d),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE1, 0x4b),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE1, 0x1f),
-	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_HSCLK_SEL, 0x22),
 };
 
 static const struct qmp_phy_init_tbl sdx55_qmp_pcie_tx_tbl[] = {
@@ -1212,6 +1215,9 @@ static const struct qmp_phy_init_tbl sdx55_qmp_pcie_pcs_misc_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_G4_RXEQEVAL_TIME, 0x13),
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_G4_EQ_CONFIG2, 0x01),
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_G4_EQ_CONFIG5, 0x02),
+};
+
+static const struct qmp_phy_init_tbl sdx55_qmp_pcie_ep_pcs_misc_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_LANE1_INSIG_SW_CTRL2, 0x00),
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_LANE1_INSIG_MX_CTRL2, 0x00),
 };
@@ -2003,6 +2009,14 @@ static const struct qmp_phy_cfg sdx55_qmp_pciephy_cfg = {
 		.pcs_misc	= sdx55_qmp_pcie_pcs_misc_tbl,
 		.pcs_misc_num	= ARRAY_SIZE(sdx55_qmp_pcie_pcs_misc_tbl),
 	},
+
+	.tbls_ep = &(const struct qmp_phy_cfg_tbls) {
+		.serdes		= sdx55_qmp_pcie_ep_serdes_tbl,
+		.serdes_num	= ARRAY_SIZE(sdx55_qmp_pcie_ep_serdes_tbl),
+		.pcs_misc	= sdx55_qmp_pcie_ep_pcs_misc_tbl,
+		.pcs_misc_num	= ARRAY_SIZE(sdx55_qmp_pcie_ep_pcs_misc_tbl),
+	},
+
 	.clk_list		= sdm845_pciephy_clk_l,
 	.num_clks		= ARRAY_SIZE(sdm845_pciephy_clk_l),
 	.reset_list		= sdm845_pciephy_reset_l,
-- 
2.25.1

[PATCH v2 12/13] phy: qcom-qmp-pcie: Add RC init sequence for SDX55

[Manivannan Sadhasivam]

Add PCIe RC init sequence making use of the common init sequence. The RC
mode additionally requires REFCLK_DRV_DSBL bit to set during powerup and
powerdown.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c      | 49 ++++++++++++++++++-
 .../qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h    |  2 +
 2 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index f526f73f76ef..9d92facd47a6 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -1138,6 +1138,41 @@ static const struct qmp_phy_init_tbl sdx55_qmp_pcie_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_HSCLK_SEL, 0x22),
 };
 
+static const struct qmp_phy_init_tbl sdx55_qmp_pcie_rc_serdes_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_EN_CENTER, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_PER1, 0x31),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_PER2, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_STEP_SIZE1_MODE0, 0xce),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_STEP_SIZE2_MODE0, 0x0b),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_STEP_SIZE1_MODE1, 0x97),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SSC_STEP_SIZE2_MODE1, 0x0c),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CLK_ENABLE1, 0x90),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CLK_EP_DIV_MODE0, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CLK_EP_DIV_MODE1, 0x10),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CP_CTRL_MODE0, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CP_CTRL_MODE1, 0x06),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_RCTRL_MODE0, 0x16),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_RCTRL_MODE1, 0x16),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_CCTRL_MODE0, 0x36),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_PLL_CCTRL_MODE1, 0x36),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SYSCLK_EN_SEL, 0x08),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP1_MODE0, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP2_MODE0, 0x0d),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP1_MODE1, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_LOCK_CMP2_MODE1, 0x1a),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DEC_START_MODE0, 0xc3),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DEC_START_MODE1, 0xd0),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DIV_FRAC_START3_MODE0, 0x05),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DIV_FRAC_START1_MODE1, 0x55),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DIV_FRAC_START2_MODE1, 0x55),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_DIV_FRAC_START3_MODE1, 0x05),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_CLK_SELECT, 0x34),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE0, 0xca),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE0, 0x1e),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE1, 0xd8),
+	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE1, 0x20),
+};
+
 static const struct qmp_phy_init_tbl sdx55_qmp_pcie_ep_serdes_tbl[] = {
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_BG_TIMER, 0x02),
 	QMP_PHY_INIT_CFG(QSERDES_V4_COM_SYS_CLK_CTRL, 0x07),
@@ -1217,6 +1252,11 @@ static const struct qmp_phy_init_tbl sdx55_qmp_pcie_pcs_misc_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_G4_EQ_CONFIG5, 0x02),
 };
 
+static const struct qmp_phy_init_tbl sdx55_qmp_pcie_rc_pcs_misc_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_ENDPOINT_REFCLK_DRIVE, 0xc1),
+	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_PCIE_OSC_DTCT_ACTIONS, 0x00),
+};
+
 static const struct qmp_phy_init_tbl sdx55_qmp_pcie_ep_pcs_misc_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_LANE1_INSIG_SW_CTRL2, 0x00),
 	QMP_PHY_INIT_CFG(QPHY_V4_20_PCS_LANE1_INSIG_MX_CTRL2, 0x00),
@@ -2010,6 +2050,13 @@ static const struct qmp_phy_cfg sdx55_qmp_pciephy_cfg = {
 		.pcs_misc_num	= ARRAY_SIZE(sdx55_qmp_pcie_pcs_misc_tbl),
 	},
 
+	.tbls_rc = &(const struct qmp_phy_cfg_tbls) {
+		.serdes		= sdx55_qmp_pcie_rc_serdes_tbl,
+		.serdes_num	= ARRAY_SIZE(sdx55_qmp_pcie_rc_serdes_tbl),
+		.pcs_misc	= sdx55_qmp_pcie_rc_pcs_misc_tbl,
+		.pcs_misc_num	= ARRAY_SIZE(sdx55_qmp_pcie_rc_pcs_misc_tbl),
+	},
+
 	.tbls_ep = &(const struct qmp_phy_cfg_tbls) {
 		.serdes		= sdx55_qmp_pcie_ep_serdes_tbl,
 		.serdes_num	= ARRAY_SIZE(sdx55_qmp_pcie_ep_serdes_tbl),
@@ -2025,7 +2072,7 @@ static const struct qmp_phy_cfg sdx55_qmp_pciephy_cfg = {
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= sm8250_pcie_regs_layout,
 
-	.pwrdn_ctrl		= SW_PWRDN,
+	.pwrdn_ctrl		= SW_PWRDN | REFCLK_DRV_DSBL,
 	.phy_status		= PHYSTATUS_4_20,
 };
 
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h
index af273602998e..ac872a9eff9a 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v4_20.h
@@ -6,6 +6,8 @@
 #ifndef QCOM_PHY_QMP_PCS_PCIE_V4_20_H_
 #define QCOM_PHY_QMP_PCS_PCIE_V4_20_H_
 
+#define QPHY_V4_20_PCS_PCIE_ENDPOINT_REFCLK_DRIVE	0x01c
+#define QPHY_V4_20_PCS_PCIE_OSC_DTCT_ACTIONS		0x090
 #define QPHY_V4_20_PCS_PCIE_EQ_CONFIG1			0x0a0
 #define QPHY_V4_20_PCS_PCIE_G3_RXEQEVAL_TIME		0x0f0
 #define QPHY_V4_20_PCS_PCIE_G4_RXEQEVAL_TIME		0x0f4
-- 
2.25.1

[PATCH v2 13/13] PCI: qcom: Add support for SDX55 SoC

[Manivannan Sadhasivam]

Add support for SDX55 SoC reusing the 1.9.0 config. The PCIe controller is
of version 1.10.0 but it is compatible with the 1.9.0 config. This SoC also
requires "sleep" clock which is added as an optional clock in the driver,
since it is not required on other SoCs.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 77e5dc7b88ad..659df73114dd 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -182,7 +182,7 @@ struct qcom_pcie_resources_2_3_3 {
 
 /* 6 clocks typically, 7 for sm8250 */
 struct qcom_pcie_resources_2_7_0 {
-	struct clk_bulk_data clks[12];
+	struct clk_bulk_data clks[13];
 	int num_clks;
 	struct regulator_bulk_data supplies[2];
 	struct reset_control *pci_reset;
@@ -1208,6 +1208,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
 	res->clks[idx++].id = "noc_aggr_4";
 	res->clks[idx++].id = "noc_aggr_south_sf";
 	res->clks[idx++].id = "cnoc_qx";
+	res->clks[idx++].id = "sleep";
 
 	num_opt_clks = idx - num_clks;
 	res->num_clks = idx;
@@ -1824,6 +1825,7 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ .compatible = "qcom,pcie-sc8180x", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sc8280xp", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sdm845", .data = &cfg_2_7_0 },
+	{ .compatible = "qcom,pcie-sdx55", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8150", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8250", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8450-pcie0", .data = &cfg_1_9_0 },
-- 
2.25.1

Re: [PATCH v2 07/13] ARM: dts: qcom: sdx55: Add support for PCIe RC controller

[Konrad Dybcio]

On 24.02.2023 11:59, Manivannan Sadhasivam wrote:
> The PCIe controller in SDX55 can act as the RC controller also. Let's
> add support for it.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  arch/arm/boot/dts/qcom-sdx55.dtsi | 82 +++++++++++++++++++++++++++++++
>  1 file changed, 82 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
> index a1f4a7b0904a..b411c4ae34c3 100644
> --- a/arch/arm/boot/dts/qcom-sdx55.dtsi
> +++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
> @@ -303,6 +303,88 @@ qpic_nand: nand-controller@1b30000 {
>  			status = "disabled";
>  		};
>  
> +		pcie_rc: pcie@1c00000 {
> +			compatible = "qcom,pcie-sdx55";
> +			reg = <0x01c00000 0x3000>,
> +			      <0x40000000 0xf1d>,
> +			      <0x40000f20 0xc8>,
> +			      <0x40001000 0x1000>,
> +			      <0x40100000 0x100000>;
> +			reg-names = "parf",
> +				    "dbi",
> +				    "elbi",
> +				    "atu",
> +				    "config";
> +			device_type = "pci";
> +			linux,pci-domain = <0>;
> +			bus-range = <0x00 0xff>;
> +			num-lanes = <1>;
> +
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +
> +			ranges = <0x01000000 0x0 0x40200000 0x40200000 0x0 0x100000>,
> +				 <0x02000000 0x0 0x40300000 0x40300000 0x0 0x3fd00000>;
> +
> +			interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "msi",
> +					  "msi2",
> +					  "msi3",
> +					  "msi4",
> +					  "msi5",
> +					  "msi6",
> +					  "msi7",
> +					  "msi8";
> +			#interrupt-cells = <1>;
> +			interrupt-map-mask = <0 0 0 0x7>;
> +			interrupt-map = <0 0 0 1 &intc 0 0 0 141 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
> +					<0 0 0 2 &intc 0 0 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
> +					<0 0 0 3 &intc 0 0 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
> +					<0 0 0 4 &intc 0 0 0 144 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
> +
> +			clocks = <&gcc GCC_PCIE_PIPE_CLK>,
> +				 <&gcc GCC_PCIE_AUX_CLK>,
> +				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
> +				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
> +				 <&gcc GCC_PCIE_SLEEP_CLK>;
> +			clock-names = "pipe",
> +				      "aux",
> +				      "cfg",
> +				      "bus_master",
> +				      "bus_slave",
> +				      "slave_q2a",
> +				      "sleep";
> +
> +			assigned-clocks = <&gcc GCC_PCIE_AUX_CLK>;
> +			assigned-clock-rates = <19200000>;
> +
> +			iommus = <&apps_smmu 0x0200 0x0f>;
> +			iommu-map = <0x0   &apps_smmu 0x0200 0x1>,
> +				    <0x100 &apps_smmu 0x0201 0x1>,
> +				    <0x200 &apps_smmu 0x0202 0x1>,
> +				    <0x300 &apps_smmu 0x0203 0x1>,
> +				    <0x400 &apps_smmu 0x0204 0x1>;
> +
> +			resets = <&gcc GCC_PCIE_BCR>;
> +			reset-names = "pci";
> +
> +			power-domains = <&gcc PCIE_GDSC>;
> +
> +			phys = <&pcie_lane>;
> +			phy-names = "pciephy";
> +
> +			status = "disabled";
> +		};
> +
>  		pcie_ep: pcie-ep@1c00000 {
>  			compatible = "qcom,sdx55-pcie-ep";
>  			reg = <0x01c00000 0x3000>,

Re: [PATCH v2 08/13] ARM: dts: qcom: sdx55: List the property values vertically

[Konrad Dybcio]

On 24.02.2023 11:59, Manivannan Sadhasivam wrote:
> To align with the rest of the devicetree files and the relative properties,
> let's list the values of properties such as {reg/clock/interrupt}-names
> vertically.
> 
> Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  arch/arm/boot/dts/qcom-sdx55.dtsi | 23 ++++++++++++++++++-----
>  1 file changed, 18 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
> index b411c4ae34c3..61fdd601fc26 100644
> --- a/arch/arm/boot/dts/qcom-sdx55.dtsi
> +++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
> @@ -393,7 +393,11 @@ pcie_ep: pcie-ep@1c00000 {
>  			      <0x40001000 0x1000>,
>  			      <0x40200000 0x100000>,
>  			      <0x01c03000 0x3000>;
> -			reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
> +			reg-names = "parf",
> +				    "dbi",
> +				    "elbi",
> +				    "atu",
> +				    "addr_space",
>  				    "mmio";
>  
>  			qcom,perst-regs = <&tcsr 0xb258 0xb270>;
> @@ -405,12 +409,18 @@ pcie_ep: pcie-ep@1c00000 {
>  				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
>  				 <&gcc GCC_PCIE_SLEEP_CLK>,
>  				 <&gcc GCC_PCIE_0_CLKREF_CLK>;
> -			clock-names = "aux", "cfg", "bus_master", "bus_slave",
> -				      "slave_q2a", "sleep", "ref";
> +			clock-names = "aux",
> +				      "cfg",
> +				      "bus_master",
> +				      "bus_slave",
> +				      "slave_q2a",
> +				      "sleep",
> +				      "ref";
>  
>  			interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>,
>  				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
> -			interrupt-names = "global", "doorbell";
> +			interrupt-names = "global",
> +					  "doorbell";
>  			reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
>  			wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>;
>  			resets = <&gcc GCC_PCIE_BCR>;
> @@ -434,7 +444,10 @@ pcie_phy: phy@1c07000 {
>  				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
>  				 <&gcc GCC_PCIE_0_CLKREF_CLK>,
>  				 <&gcc GCC_PCIE_RCHNG_PHY_CLK>;
> -			clock-names = "aux", "cfg_ahb", "ref", "refgen";
> +			clock-names = "aux",
> +				      "cfg_ahb",
> +				      "ref",
> +				      "refgen";
>  
>  			resets = <&gcc GCC_PCIE_PHY_BCR>;
>  			reset-names = "phy";

Re: [PATCH v2 09/13] ARM: dts: qcom: sdx55-t55: Enable PCIe RC support

[Konrad Dybcio]

On 24.02.2023 11:59, Manivannan Sadhasivam wrote:
> Enable PCIe RC support on Thundercomm T55 board.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  arch/arm/boot/dts/qcom-sdx55-t55.dts | 42 ++++++++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx55-t55.dts b/arch/arm/boot/dts/qcom-sdx55-t55.dts
> index 7ed8feb99afb..6339af791b0b 100644
> --- a/arch/arm/boot/dts/qcom-sdx55-t55.dts
> +++ b/arch/arm/boot/dts/qcom-sdx55-t55.dts
> @@ -242,6 +242,23 @@ &ipa {
>  	memory-region = <&ipa_fw_mem>;
>  };
>  
> +&pcie_phy {
> +	vdda-phy-supply = <&vreg_l1e_bb_1p2>;
> +	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
> +
> +	status = "okay";
> +};
> +
> +&pcie_rc {
> +	perst-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>;
> +	wake-gpios = <&tlmm 53 GPIO_ACTIVE_HIGH>;
> +
> +	pinctrl-0 = <&pcie_default>;
> +	pinctrl-names = "default";
> +
> +	status = "okay";
> +};
> +
>  &qpic_bam {
>  	status = "ok";
>  };
> @@ -265,6 +282,31 @@ &remoteproc_mpss {
>  	memory-region = <&mpss_adsp_mem>;
>  };
>  
> +&tlmm {
> +	pcie_default: pcie-default-state {
> +		clkreq-pins {
> +			pins = "gpio56";
> +			function = "pcie_clkreq";
> +			drive-strength = <2>;
> +			bias-pull-up;
> +		};
> +
> +		perst-pins {
> +			pins = "gpio57";
> +			function = "gpio";
> +			drive-strength = <2>;
> +			bias-pull-down;
> +		};
> +
> +		wake-pins {
> +		       pins = "gpio53";
> +		       function = "gpio";
> +		       drive-strength = <2>;
> +		       bias-pull-up;
> +	       };
> +	};
> +};
> +
>  &usb_hsphy {
>  	status = "okay";
>  	vdda-pll-supply = <&vreg_l4e_bb_0p875>;

Re: [PATCH v2 10/13] ARM: dts: qcom: sdx55-t55: Move "status" property down

[Konrad Dybcio]

On 24.02.2023 11:59, Manivannan Sadhasivam wrote:
> To align with rest of the devicetree files, let's move the "status"
> property down
> 
> Suggested-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  arch/arm/boot/dts/qcom-sdx55-t55.dts | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx55-t55.dts b/arch/arm/boot/dts/qcom-sdx55-t55.dts
> index 6339af791b0b..67e366700105 100644
> --- a/arch/arm/boot/dts/qcom-sdx55-t55.dts
> +++ b/arch/arm/boot/dts/qcom-sdx55-t55.dts
> @@ -237,9 +237,9 @@ &blsp1_uart3 {
>  };
>  
>  &ipa {
> -	status = "okay";
> -
>  	memory-region = <&ipa_fw_mem>;
> +
> +	status = "okay";
>  };
>  
>  &pcie_phy {
> @@ -278,8 +278,9 @@ nand@0 {
>  };
>  
>  &remoteproc_mpss {
> -	status = "okay";
>  	memory-region = <&mpss_adsp_mem>;
> +
> +	status = "okay";
>  };
>  
>  &tlmm {
> @@ -308,16 +309,18 @@ wake-pins {
>  };
>  
>  &usb_hsphy {
> -	status = "okay";
>  	vdda-pll-supply = <&vreg_l4e_bb_0p875>;
>  	vdda33-supply = <&vreg_l10e_3p1>;
>  	vdda18-supply = <&vreg_l5e_bb_1p7>;
> +
> +	status = "okay";
>  };
>  
>  &usb_qmpphy {
> -	status = "okay";
>  	vdda-phy-supply = <&vreg_l4e_bb_0p875>;
>  	vdda-pll-supply = <&vreg_l1e_bb_1p2>;
> +
> +	status = "okay";
>  };
>  
>  &usb {

Re: [PATCH v2 02/13] dt-bindings: PCI: qcom: Add iommu properties

[Rob Herring]

On Fri, Feb 24, 2023 at 04:28:55PM +0530, Manivannan Sadhasivam wrote:
> Most of the PCIe controllers require iommu support to function properly.
> So let's add them to the binding.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> index a3639920fcbb..f48d0792aa57 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> @@ -64,6 +64,11 @@ properties:
>  
>    dma-coherent: true
>  
> +  iommus:
> +    maxItems: 1
> +
> +  iommu-map: true
> +

I think both properties together doesn't make sense unless the PCI host 
itself does DMA in addition to PCI bus devices doing DMA.

Rob

Re: [PATCH v2 02/13] dt-bindings: PCI: qcom: Add iommu properties

[Manivannan Sadhasivam]

On Mon, Feb 27, 2023 at 01:55:35PM -0600, Rob Herring wrote:
> On Fri, Feb 24, 2023 at 04:28:55PM +0530, Manivannan Sadhasivam wrote:
> > Most of the PCIe controllers require iommu support to function properly.
> > So let's add them to the binding.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > ---
> >  Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > index a3639920fcbb..f48d0792aa57 100644
> > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > @@ -64,6 +64,11 @@ properties:
> >  
> >    dma-coherent: true
> >  
> > +  iommus:
> > +    maxItems: 1
> > +
> > +  iommu-map: true
> > +
> 
> I think both properties together doesn't make sense unless the PCI host 
> itself does DMA in addition to PCI bus devices doing DMA.
> 

How? With "iommus", we specify the SMR mask along with the starting SID and with
iommu-map, the individual SID<->BDF mapping is specified. This has nothing to
do with host DMA capabilities.

Thanks,
Mani

> Rob

-- 
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Re: [PATCH v2 02/13] dt-bindings: PCI: qcom: Add iommu properties

[Rob Herring]

+Robin

On Tue, Feb 28, 2023 at 2:20 AM Manivannan Sadhasivam
<manivannan.sadhasivam@linaro.org> wrote:
>
> On Mon, Feb 27, 2023 at 01:55:35PM -0600, Rob Herring wrote:
> > On Fri, Feb 24, 2023 at 04:28:55PM +0530, Manivannan Sadhasivam wrote:
> > > Most of the PCIe controllers require iommu support to function properly.
> > > So let's add them to the binding.
> > >
> > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > ---
> > >  Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 5 +++++
> > >  1 file changed, 5 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > index a3639920fcbb..f48d0792aa57 100644
> > > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > @@ -64,6 +64,11 @@ properties:
> > >
> > >    dma-coherent: true
> > >
> > > +  iommus:
> > > +    maxItems: 1
> > > +
> > > +  iommu-map: true
> > > +
> >
> > I think both properties together doesn't make sense unless the PCI host
> > itself does DMA in addition to PCI bus devices doing DMA.
> >
>
> How? With "iommus", we specify the SMR mask along with the starting SID and with
> iommu-map, the individual SID<->BDF mapping is specified. This has nothing to
> do with host DMA capabilities.

I spoke with Robin offline and he agrees that having both is broken at
least in RC mode. He pointed out the issue is similar to this one on
Tegra[1].

Rob

[1] https://lore.kernel.org/all/AS8P193MB2095640357779A7F9B6026F8D2A19@AS8P193MB2095.EURP193.PROD.OUTLOOK.COM/

Re: [PATCH v2 02/13] dt-bindings: PCI: qcom: Add iommu properties

[Manivannan Sadhasivam]

On Wed, Mar 01, 2023 at 08:58:51AM -0600, Rob Herring wrote:
> +Robin
> 
> On Tue, Feb 28, 2023 at 2:20 AM Manivannan Sadhasivam
> <manivannan.sadhasivam@linaro.org> wrote:
> >
> > On Mon, Feb 27, 2023 at 01:55:35PM -0600, Rob Herring wrote:
> > > On Fri, Feb 24, 2023 at 04:28:55PM +0530, Manivannan Sadhasivam wrote:
> > > > Most of the PCIe controllers require iommu support to function properly.
> > > > So let's add them to the binding.
> > > >
> > > > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > > > ---
> > > >  Documentation/devicetree/bindings/pci/qcom,pcie.yaml | 5 +++++
> > > >  1 file changed, 5 insertions(+)
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > > index a3639920fcbb..f48d0792aa57 100644
> > > > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > > > @@ -64,6 +64,11 @@ properties:
> > > >
> > > >    dma-coherent: true
> > > >
> > > > +  iommus:
> > > > +    maxItems: 1
> > > > +
> > > > +  iommu-map: true
> > > > +
> > >
> > > I think both properties together doesn't make sense unless the PCI host
> > > itself does DMA in addition to PCI bus devices doing DMA.
> > >
> >
> > How? With "iommus", we specify the SMR mask along with the starting SID and with
> > iommu-map, the individual SID<->BDF mapping is specified. This has nothing to
> > do with host DMA capabilities.
> 
> I spoke with Robin offline and he agrees that having both is broken at
> least in RC mode. He pointed out the issue is similar to this one on
> Tegra[1].
> 

Looked into that thread and concluded that "iommus" property should go away.
Submitted a patch [1] to remove that property from PCIe nodes of all Qualcomm
SoCs.

Thanks for pointing out! Will update this bindings patch in next revision.

- Mani

[1] https://lore.kernel.org/linux-arm-msm/20230308075648.134119-1-manivannan.sadhasivam@linaro.org/

> Rob
> 
> [1] https://lore.kernel.org/all/AS8P193MB2095640357779A7F9B6026F8D2A19@AS8P193MB2095.EURP193.PROD.OUTLOOK.COM/

-- 
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