[PATCH v3 0/7] Add PCIe support for SM8150 SoC

[PATCH v3 0/7] Add PCIe support for SM8150 SoC

[Bhupesh Sharma]

Changes since v2:
-----------------
- v2 can be found here: https://lore.kernel.org/linux-arm-msm/20220301072511.117818-1-bhupesh.sharma@linaro.org/T/
- Fixed review comments from Dmitry and Bjorn.
- Modified [PATCH 3/7] from v1 to include gdsc driver structs and
  support code for PCIe0 and PCIe1 (in addition to defines for the
  same).

Changes since v1:
-----------------
- v1 can be found here: https://lore.kernel.org/linux-arm-msm/20220223192946.473172-1-bhupesh.sharma@linaro.org/T/
- Collected ACKs on [PATCH 1/7], [PATCH 2/7] and [PATCH 4/7] from Rob
  and Dmitry.
- Broke down another separately sent out PATCH (see [1]), into a 3 patches (one each for emac, pci
  and ufs gdsc defines) - one of which is carried as [PATCH 3/7]
  in this series, which fixes a compilation error.
  The rest of the gdsc defines have been sent out as separate patch(es).
[1]. https://patchwork.kernel.org/project/netdevbpf/patch/20220126221725.710167-4-bhupesh.sharma@linaro.org/
- Rob's bot reported a number of 'dtbs_check' errors with the v1 series,
  which are been fixed with a separate series now (see [2]), to ease the
  review of this series.
[2]. https://lore.kernel.org/linux-arm-msm/20220228123019.382037-1-bhupesh.sharma@linaro.org/T/


This series adds PCIe support for Qualcomm SM8150 SoC with relevant PHYs.
There are 2 PCIe instances on this SoC each with different PHYs. The PCIe
controller and PHYs are mostly compatible with the ones found on SM8250
SoC, hence the old drivers are modified to add the support.

This series has been tested on SA8155p ADP board with QCA6696 chipset connected
onboard.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>

Bhupesh Sharma (7):
  dt-bindings: pci: qcom: Document PCIe bindings for SM8150 SoC
  dt-bindings: phy: qcom,qmp: Add SM8150 PCIe PHY bindings
  clk: qcom: gcc: Add PCIe0 and PCIe1 GDSC for SM8150
  phy: qcom-qmp: Add SM8150 PCIe QMP PHYs
  PCI: qcom: Add SM8150 SoC support
  arm64: dts: qcom: sm8150: Add PCIe nodes
  arm64: dts: qcom: sa8155: Enable PCIe nodes

 .../devicetree/bindings/pci/qcom,pcie.txt     |   5 +-
 .../devicetree/bindings/phy/qcom,qmp-phy.yaml |   4 +
 arch/arm64/boot/dts/qcom/sa8155p-adp.dts      |  42 +++
 arch/arm64/boot/dts/qcom/sm8150.dtsi          | 243 ++++++++++++++++++
 drivers/clk/qcom/gcc-sm8150.c                 |  20 ++
 drivers/pci/controller/dwc/pcie-qcom.c        |   8 +
 drivers/phy/qualcomm/phy-qcom-qmp.c           |  90 +++++++
 include/dt-bindings/clock/qcom,gcc-sm8150.h   |   2 +
 8 files changed, 412 insertions(+), 2 deletions(-)

-- 
2.35.1

[PATCH v3 1/7] dt-bindings: pci: qcom: Document PCIe bindings for SM8150 SoC

[Bhupesh Sharma]

Document the PCIe DT bindings for SM8150 SoC. The PCIe IP is similar to
the one used on SM8250.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 Documentation/devicetree/bindings/pci/qcom,pcie.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
index a0ae024c2d0c..a023f97daf84 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -14,6 +14,7 @@
 			- "qcom,pcie-qcs404" for qcs404
 			- "qcom,pcie-sc8180x" for sc8180x
 			- "qcom,pcie-sdm845" for sdm845
+			- "qcom,pcie-sm8150" for sm8150
 			- "qcom,pcie-sm8250" for sm8250
 			- "qcom,pcie-ipq6018" for ipq6018
 
@@ -157,7 +158,7 @@
 			- "pipe"	PIPE clock
 
 - clock-names:
-	Usage: required for sc8180x and sm8250
+	Usage: required for sc8180x, sm8150 and sm8250
 	Value type: <stringlist>
 	Definition: Should contain the following entries
 			- "aux"		Auxiliary clock
@@ -246,7 +247,7 @@
 			- "ahb"			AHB reset
 
 - reset-names:
-	Usage: required for sc8180x, sdm845 and sm8250
+	Usage: required for sc8180x, sdm845, sm8150 and sm8250
 	Value type: <stringlist>
 	Definition: Should contain the following entries
 			- "pci"			PCIe core reset
-- 
2.35.1

[PATCH v3 2/7] dt-bindings: phy: qcom,qmp: Add SM8150 PCIe PHY bindings

[Bhupesh Sharma]

Add the following two PCIe PHYs found on SM8150, to the QMP binding:

QMP GEN3x1 PHY - 1 lane
QMP GEN3x2 PHY - 2 lanes

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
index e417cd667997..9e0f60e682c4 100644
--- a/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,qmp-phy.yaml
@@ -38,6 +38,8 @@ properties:
       - qcom,sdm845-qmp-usb3-phy
       - qcom,sdm845-qmp-usb3-uni-phy
       - qcom,sm6115-qmp-ufs-phy
+      - qcom,sm8150-qmp-gen3x1-pcie-phy
+      - qcom,sm8150-qmp-gen3x2-pcie-phy
       - qcom,sm8150-qmp-ufs-phy
       - qcom,sm8150-qmp-usb3-phy
       - qcom,sm8150-qmp-usb3-uni-phy
@@ -333,6 +335,8 @@ allOf:
               - qcom,sdm845-qhp-pcie-phy
               - qcom,sdm845-qmp-pcie-phy
               - qcom,sdx55-qmp-pcie-phy
+              - qcom,sm8150-qmp-gen3x1-pcie-phy
+              - qcom,sm8150-qmp-gen3x2-pcie-phy
               - qcom,sm8250-qmp-gen3x1-pcie-phy
               - qcom,sm8250-qmp-gen3x2-pcie-phy
               - qcom,sm8250-qmp-modem-pcie-phy
-- 
2.35.1

[PATCH v3 3/7] clk: qcom: gcc: Add PCIe0 and PCIe1 GDSC for SM8150

[Bhupesh Sharma]

Add the PCIe0 and PCIe1 GDSC defines & driver structures for SM8150.

Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 drivers/clk/qcom/gcc-sm8150.c               | 20 ++++++++++++++++++++
 include/dt-bindings/clock/qcom,gcc-sm8150.h |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/drivers/clk/qcom/gcc-sm8150.c b/drivers/clk/qcom/gcc-sm8150.c
index 245794485719..7e478dc2cefe 100644
--- a/drivers/clk/qcom/gcc-sm8150.c
+++ b/drivers/clk/qcom/gcc-sm8150.c
@@ -3448,6 +3448,24 @@ static struct clk_branch gcc_video_xo_clk = {
 	},
 };
 
+static struct gdsc pcie_0_gdsc = {
+	.gdscr = 0x6b004,
+	.pd = {
+		.name = "pcie_0_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = POLL_CFG_GDSCR,
+};
+
+static struct gdsc pcie_1_gdsc = {
+	.gdscr = 0x8d004,
+	.pd = {
+		.name = "pcie_1_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = POLL_CFG_GDSCR,
+};
+
 static struct gdsc usb30_prim_gdsc = {
 		.gdscr = 0xf004,
 		.pd = {
@@ -3714,6 +3732,8 @@ static const struct qcom_reset_map gcc_sm8150_resets[] = {
 };
 
 static struct gdsc *gcc_sm8150_gdscs[] = {
+	[PCIE_0_GDSC] = &pcie_0_gdsc,
+	[PCIE_1_GDSC] = &pcie_1_gdsc,
 	[USB30_PRIM_GDSC] = &usb30_prim_gdsc,
 	[USB30_SEC_GDSC] = &usb30_sec_gdsc,
 };
diff --git a/include/dt-bindings/clock/qcom,gcc-sm8150.h b/include/dt-bindings/clock/qcom,gcc-sm8150.h
index 3e1a91876610..ae9c16410420 100644
--- a/include/dt-bindings/clock/qcom,gcc-sm8150.h
+++ b/include/dt-bindings/clock/qcom,gcc-sm8150.h
@@ -241,6 +241,8 @@
 #define GCC_USB_PHY_CFG_AHB2PHY_BCR				28
 
 /* GCC GDSCRs */
+#define PCIE_0_GDSC						0
+#define PCIE_1_GDSC						1
 #define USB30_PRIM_GDSC                     4
 #define USB30_SEC_GDSC						5
 
-- 
2.35.1

[PATCH v3 4/7] phy: qcom-qmp: Add SM8150 PCIe QMP PHYs

[Bhupesh Sharma]

SM8150 has multiple (different) PHY versions:
QMP GEN3x1 PHY - 1 lane
QMP GEN3x2 PHY - 2 lanes

Add support for these with relevant init sequence.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 90 +++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 8ea87c69f463..0805c1bab690 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -3294,6 +3294,11 @@ static const char * const sdm845_pciephy_clk_l[] = {
 	"aux", "cfg_ahb", "ref", "refgen",
 };
 
+/* the pcie phy on sm8150 doesn't have a ref clock */
+static const char * const sm8150_pciephy_clk_l[] = {
+	"aux", "cfg_ahb", "refgen",
+};
+
 static const char * const qmp_v4_phy_clk_l[] = {
 	"aux", "ref_clk_src", "ref", "com_aux",
 };
@@ -3583,6 +3588,85 @@ static const struct qmp_phy_cfg sdm845_qhp_pciephy_cfg = {
 	.pwrdn_delay_max	= 1005,		/* us */
 };
 
+static const struct qmp_phy_cfg sm8150_qmp_gen3x1_pciephy_cfg = {
+	.type = PHY_TYPE_PCIE,
+	.nlanes = 1,
+
+	.serdes_tbl		= sm8250_qmp_pcie_serdes_tbl,
+	.serdes_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_serdes_tbl),
+	.serdes_tbl_sec		= sm8250_qmp_gen3x1_pcie_serdes_tbl,
+	.serdes_tbl_num_sec	= ARRAY_SIZE(sm8250_qmp_gen3x1_pcie_serdes_tbl),
+	.tx_tbl			= sm8250_qmp_pcie_tx_tbl,
+	.tx_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_tx_tbl),
+	.rx_tbl			= sm8250_qmp_pcie_rx_tbl,
+	.rx_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_rx_tbl),
+	.rx_tbl_sec		= sm8250_qmp_gen3x1_pcie_rx_tbl,
+	.rx_tbl_num_sec		= ARRAY_SIZE(sm8250_qmp_gen3x1_pcie_rx_tbl),
+	.pcs_tbl		= sm8250_qmp_pcie_pcs_tbl,
+	.pcs_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_pcs_tbl),
+	.pcs_tbl_sec		= sm8250_qmp_gen3x1_pcie_pcs_tbl,
+	.pcs_tbl_num_sec		= ARRAY_SIZE(sm8250_qmp_gen3x1_pcie_pcs_tbl),
+	.pcs_misc_tbl		= sm8250_qmp_pcie_pcs_misc_tbl,
+	.pcs_misc_tbl_num	= ARRAY_SIZE(sm8250_qmp_pcie_pcs_misc_tbl),
+	.pcs_misc_tbl_sec		= sm8250_qmp_gen3x1_pcie_pcs_misc_tbl,
+	.pcs_misc_tbl_num_sec	= ARRAY_SIZE(sm8250_qmp_gen3x1_pcie_pcs_misc_tbl),
+	.clk_list		= sm8150_pciephy_clk_l,
+	.num_clks		= ARRAY_SIZE(sm8150_pciephy_clk_l),
+	.reset_list		= sdm845_pciephy_reset_l,
+	.num_resets		= ARRAY_SIZE(sdm845_pciephy_reset_l),
+	.vreg_list		= qmp_phy_vreg_l,
+	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
+	.regs			= sm8250_pcie_regs_layout,
+
+	.start_ctrl		= PCS_START | SERDES_START,
+	.pwrdn_ctrl		= SW_PWRDN | REFCLK_DRV_DSBL,
+	.phy_status		= PHYSTATUS,
+
+	.has_pwrdn_delay	= true,
+	.pwrdn_delay_min	= 995,		/* us */
+	.pwrdn_delay_max	= 1005,		/* us */
+};
+
+static const struct qmp_phy_cfg sm8150_qmp_gen3x2_pciephy_cfg = {
+	.type = PHY_TYPE_PCIE,
+	.nlanes = 2,
+
+	.serdes_tbl		= sm8250_qmp_pcie_serdes_tbl,
+	.serdes_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_serdes_tbl),
+	.tx_tbl			= sm8250_qmp_pcie_tx_tbl,
+	.tx_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_tx_tbl),
+	.tx_tbl_sec		= sm8250_qmp_gen3x2_pcie_tx_tbl,
+	.tx_tbl_num_sec		= ARRAY_SIZE(sm8250_qmp_gen3x2_pcie_tx_tbl),
+	.rx_tbl			= sm8250_qmp_pcie_rx_tbl,
+	.rx_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_rx_tbl),
+	.rx_tbl_sec		= sm8250_qmp_gen3x2_pcie_rx_tbl,
+	.rx_tbl_num_sec		= ARRAY_SIZE(sm8250_qmp_gen3x2_pcie_rx_tbl),
+	.pcs_tbl		= sm8250_qmp_pcie_pcs_tbl,
+	.pcs_tbl_num		= ARRAY_SIZE(sm8250_qmp_pcie_pcs_tbl),
+	.pcs_tbl_sec		= sm8250_qmp_gen3x2_pcie_pcs_tbl,
+	.pcs_tbl_num_sec		= ARRAY_SIZE(sm8250_qmp_gen3x2_pcie_pcs_tbl),
+	.pcs_misc_tbl		= sm8250_qmp_pcie_pcs_misc_tbl,
+	.pcs_misc_tbl_num	= ARRAY_SIZE(sm8250_qmp_pcie_pcs_misc_tbl),
+	.pcs_misc_tbl_sec		= sm8250_qmp_gen3x2_pcie_pcs_misc_tbl,
+	.pcs_misc_tbl_num_sec	= ARRAY_SIZE(sm8250_qmp_gen3x2_pcie_pcs_misc_tbl),
+	.clk_list		= sm8150_pciephy_clk_l,
+	.num_clks		= ARRAY_SIZE(sm8150_pciephy_clk_l),
+	.reset_list		= sdm845_pciephy_reset_l,
+	.num_resets		= ARRAY_SIZE(sdm845_pciephy_reset_l),
+	.vreg_list		= qmp_phy_vreg_l,
+	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
+	.regs			= sm8250_pcie_regs_layout,
+
+	.start_ctrl		= PCS_START | SERDES_START,
+	.pwrdn_ctrl		= SW_PWRDN | REFCLK_DRV_DSBL,
+	.phy_status		= PHYSTATUS,
+
+	.is_dual_lane_phy	= true,
+	.has_pwrdn_delay	= true,
+	.pwrdn_delay_min	= 995,		/* us */
+	.pwrdn_delay_max	= 1005,		/* us */
+};
+
 static const struct qmp_phy_cfg sm8250_qmp_gen3x1_pciephy_cfg = {
 	.type = PHY_TYPE_PCIE,
 	.nlanes = 1,
@@ -6004,6 +6088,12 @@ static const struct of_device_id qcom_qmp_phy_of_match_table[] = {
 	}, {
 		.compatible = "qcom,sm6115-qmp-ufs-phy",
 		.data = &sm6115_ufsphy_cfg,
+	}, {
+		.compatible = "qcom,sm8150-qmp-gen3x1-pcie-phy",
+		.data = &sm8150_qmp_gen3x1_pciephy_cfg,
+	}, {
+		.compatible = "qcom,sm8150-qmp-gen3x2-pcie-phy",
+		.data = &sm8150_qmp_gen3x2_pciephy_cfg,
 	}, {
 		.compatible = "qcom,sm8150-qmp-ufs-phy",
 		.data = &sm8150_ufsphy_cfg,
-- 
2.35.1

[PATCH v3 5/7] PCI: qcom: Add SM8150 SoC support

[Bhupesh Sharma]

The PCIe IP (rev 1.5.0) on SM8150 SoC is similar to the one used on
SM8250. Hence the support is added reusing the members of ops_1_9_0.

Cc: Vinod Koul <vkoul@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index c19cd506ed3f..564e2f10ea65 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1511,6 +1511,13 @@ static const struct qcom_pcie_cfg sdm845_cfg = {
 	.ops = &ops_2_7_0,
 };
 
+static const struct qcom_pcie_cfg sm8150_cfg = {
+	/* sm8150 has qcom IP rev 1.5.0. However 1.5.0 ops are same as
+	 * 1.9.0, so reuse the same.
+	 */
+	.ops = &ops_1_9_0,
+};
+
 static const struct qcom_pcie_cfg sm8250_cfg = {
 	.ops = &ops_1_9_0,
 };
@@ -1626,6 +1633,7 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ .compatible = "qcom,pcie-ipq4019", .data = &ipq4019_cfg },
 	{ .compatible = "qcom,pcie-qcs404", .data = &ipq4019_cfg },
 	{ .compatible = "qcom,pcie-sdm845", .data = &sdm845_cfg },
+	{ .compatible = "qcom,pcie-sm8150", .data = &sm8150_cfg },
 	{ .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg },
 	{ .compatible = "qcom,pcie-sc8180x", .data = &sm8250_cfg },
 	{ .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
-- 
2.35.1

[PATCH v3 6/7] arm64: dts: qcom: sm8150: Add PCIe nodes

[Bhupesh Sharma]

Add nodes for the two PCIe controllers found on the SM8150 SoC.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8150.dtsi | 243 +++++++++++++++++++++++++++
 1 file changed, 243 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index 6012322a5984..598bc3d1ce69 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -1626,6 +1626,203 @@ system-cache-controller@9200000 {
 			interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
+		pcie0: pci@1c00000 {
+			compatible = "qcom,pcie-sm8150", "snps,dw-pcie";
+			reg = <0 0x01c00000 0 0x3000>,
+			      <0 0x60000000 0 0xf1d>,
+			      <0 0x60000f20 0 0xa8>,
+			      <0 0x60001000 0 0x1000>,
+			      <0 0x60100000 0 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 0x60200000 0 0x60200000 0x0 0x100000>,
+				 <0x02000000 0x0 0x60300000 0 0x60300000 0x0 0x3d00000>;
+
+			interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 149 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+					<0 0 0 2 &intc 0 150 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+					<0 0 0 3 &intc 0 151 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+					<0 0 0 4 &intc 0 152 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+			clocks = <&gcc GCC_PCIE_0_PIPE_CLK>,
+				 <&gcc GCC_PCIE_0_AUX_CLK>,
+				 <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_0_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>;
+			clock-names = "pipe",
+				      "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "tbu";
+
+			iommus = <&apps_smmu 0x1d80 0x7f>;
+			iommu-map = <0x0   &apps_smmu 0x1d80 0x1>,
+				    <0x100 &apps_smmu 0x1d81 0x1>;
+
+			resets = <&gcc GCC_PCIE_0_BCR>;
+			reset-names = "pci";
+
+			power-domains = <&gcc PCIE_0_GDSC>;
+
+			phys = <&pcie0_lane>;
+			phy-names = "pciephy";
+
+			perst-gpio = <&tlmm 35 GPIO_ACTIVE_HIGH>;
+			enable-gpio = <&tlmm 37 GPIO_ACTIVE_HIGH>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&pcie0_default_state>;
+
+			status = "disabled";
+		};
+
+		pcie0_phy: phy@1c06000 {
+			compatible = "qcom,sm8150-qmp-gen3x1-pcie-phy";
+			reg = <0 0x01c06000 0 0x1c0>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			clocks = <&gcc GCC_PCIE_PHY_AUX_CLK>,
+				 <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE0_PHY_REFGEN_CLK>;
+			clock-names = "aux", "cfg_ahb", "refgen";
+
+			resets = <&gcc GCC_PCIE_0_PHY_BCR>;
+			reset-names = "phy";
+
+			assigned-clocks = <&gcc GCC_PCIE0_PHY_REFGEN_CLK>;
+			assigned-clock-rates = <100000000>;
+
+			status = "disabled";
+
+			pcie0_lane: phy@1c06200 {
+				reg = <0 0x1c06200 0 0x170>, /* tx */
+				      <0 0x1c06400 0 0x200>, /* rx */
+				      <0 0x1c06800 0 0x1f0>, /* pcs */
+				      <0 0x1c06c00 0 0xf4>; /* "pcs_lane" same as pcs_misc? */
+				clocks = <&gcc GCC_PCIE_0_PIPE_CLK>;
+				clock-names = "pipe0";
+
+				#phy-cells = <0>;
+				clock-output-names = "pcie_0_pipe_clk";
+			};
+		};
+
+		pcie1: pci@1c08000 {
+			compatible = "qcom,pcie-sm8150", "snps,dw-pcie";
+			reg = <0 0x01c08000 0 0x3000>,
+			      <0 0x40000000 0 0xf1d>,
+			      <0 0x40000f20 0 0xa8>,
+			      <0 0x40001000 0 0x1000>,
+			      <0 0x40100000 0 0x100000>;
+			reg-names = "parf", "dbi", "elbi", "atu", "config";
+			device_type = "pci";
+			linux,pci-domain = <1>;
+			bus-range = <0x00 0xff>;
+			num-lanes = <2>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			ranges = <0x01000000 0x0 0x40200000 0x0 0x40200000 0x0 0x100000>,
+				 <0x02000000 0x0 0x40300000 0x0 0x40300000 0x0 0x1fd00000>;
+
+			interrupts = <GIC_SPI 307 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "msi";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 434 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+					<0 0 0 2 &intc 0 435 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+					<0 0 0 3 &intc 0 438 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+					<0 0 0 4 &intc 0 439 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+			clocks = <&gcc GCC_PCIE_1_PIPE_CLK>,
+				 <&gcc GCC_PCIE_1_AUX_CLK>,
+				 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_1_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_1_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_1_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>;
+			clock-names = "pipe",
+				      "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "tbu";
+
+			assigned-clocks = <&gcc GCC_PCIE_1_AUX_CLK>;
+			assigned-clock-rates = <19200000>;
+
+			iommus = <&apps_smmu 0x1e00 0x7f>;
+			iommu-map = <0x0   &apps_smmu 0x1e00 0x1>,
+				    <0x100 &apps_smmu 0x1e01 0x1>;
+
+			resets = <&gcc GCC_PCIE_1_BCR>;
+			reset-names = "pci";
+
+			power-domains = <&gcc PCIE_1_GDSC>;
+
+			phys = <&pcie1_lane>;
+			phy-names = "pciephy";
+
+			perst-gpio = <&tlmm 102 GPIO_ACTIVE_HIGH>;
+			enable-gpio = <&tlmm 104 GPIO_ACTIVE_HIGH>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&pcie1_default_state>;
+
+			status = "disabled";
+		};
+
+		pcie1_phy: phy@1c0e000 {
+			compatible = "qcom,sm8150-qmp-gen3x2-pcie-phy";
+			reg = <0 0x01c0e000 0 0x1c0>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			clocks = <&gcc GCC_PCIE_PHY_AUX_CLK>,
+				 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE1_PHY_REFGEN_CLK>;
+			clock-names = "aux", "cfg_ahb", "refgen";
+
+			resets = <&gcc GCC_PCIE_1_PHY_BCR>;
+			reset-names = "phy";
+
+			assigned-clocks = <&gcc GCC_PCIE1_PHY_REFGEN_CLK>;
+			assigned-clock-rates = <100000000>;
+
+			status = "disabled";
+
+			pcie1_lane: phy@1c0e200 {
+				reg = <0 0x1c0e200 0 0x170>, /* tx0 */
+				      <0 0x1c0e400 0 0x200>, /* rx0 */
+				      <0 0x1c0ea00 0 0x1f0>, /* pcs */
+				      <0 0x1c0e600 0 0x170>, /* tx1 */
+				      <0 0x1c0e800 0 0x200>, /* rx1 */
+				      <0 0x1c0ee00 0 0xf4>; /* "pcs_com" same as pcs_misc? */
+				clocks = <&gcc GCC_PCIE_1_PIPE_CLK>;
+				clock-names = "pipe0";
+
+				#phy-cells = <0>;
+				clock-output-names = "pcie_1_pipe_clk";
+			};
+		};
+
 		ufs_mem_hc: ufshc@1d84000 {
 			compatible = "qcom,sm8150-ufshc", "qcom,ufshc",
 				     "jedec,ufs-2.0";
@@ -2327,6 +2524,52 @@ qup_spi19_default: qup-spi19-default {
 				drive-strength = <6>;
 				bias-disable;
 			};
+
+			pcie0_default_state: pcie0-default {
+				perst {
+					pins = "gpio35";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-down;
+				};
+
+				clkreq {
+					pins = "gpio36";
+					function = "pci_e0";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+
+				wake {
+					pins = "gpio37";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+			};
+
+			pcie1_default_state: pcie1-default {
+				perst {
+					pins = "gpio102";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-down;
+				};
+
+				clkreq {
+					pins = "gpio103";
+					function = "pci_e1";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+
+				wake {
+					pins = "gpio104";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+			};
 		};
 
 		remoteproc_mpss: remoteproc@4080000 {
-- 
2.35.1

[PATCH v3 7/7] arm64: dts: qcom: sa8155: Enable PCIe nodes

[Bhupesh Sharma]

SA8155p ADP board supports the PCIe0 controller in the RC
mode (only). So add the support for the same.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 arch/arm64/boot/dts/qcom/sa8155p-adp.dts | 42 ++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
index 8756c2b25c7e..3f6b3ee404f5 100644
--- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
@@ -387,9 +387,51 @@ &usb_2_qmpphy {
 	vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
 };
 
+&pcie0 {
+	status = "okay";
+};
+
+&pcie0_phy {
+	status = "okay";
+	vdda-phy-supply = <&vreg_l18c_0p88>;
+	vdda-pll-supply = <&vreg_l8c_1p2>;
+};
+
+&pcie1_phy {
+	vdda-phy-supply = <&vreg_l18c_0p88>;
+	vdda-pll-supply = <&vreg_l8c_1p2>;
+};
+
 &tlmm {
 	gpio-reserved-ranges = <0 4>;
 
+	bt_en_default: bt_en_default {
+		mux {
+			pins = "gpio172";
+			function = "gpio";
+		};
+
+		config {
+			pins = "gpio172";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+	};
+
+	wlan_en_default: wlan_en_default {
+		mux {
+			pins = "gpio169";
+			function = "gpio";
+		};
+
+		config {
+			pins = "gpio169";
+			drive-strength = <16>;
+			output-high;
+			bias-pull-up;
+		};
+	};
+
 	usb2phy_ac_en1_default: usb2phy_ac_en1_default {
 		mux {
 			pins = "gpio113";
-- 
2.35.1

Re: [PATCH v3 7/7] arm64: dts: qcom: sa8155: Enable PCIe nodes

[Dmitry Baryshkov]

On Wed, 2 Mar 2022 at 23:31, Bhupesh Sharma <bhupesh.sharma@linaro.org> wrote:
>
> SA8155p ADP board supports the PCIe0 controller in the RC
> mode (only). So add the support for the same.
>
> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sa8155p-adp.dts | 42 ++++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> index 8756c2b25c7e..3f6b3ee404f5 100644
> --- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> +++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> @@ -387,9 +387,51 @@ &usb_2_qmpphy {
>         vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
>  };
>
> +&pcie0 {
> +       status = "okay";
> +};
> +
> +&pcie0_phy {
> +       status = "okay";
> +       vdda-phy-supply = <&vreg_l18c_0p88>;
> +       vdda-pll-supply = <&vreg_l8c_1p2>;
> +};
> +
> +&pcie1_phy {
> +       vdda-phy-supply = <&vreg_l18c_0p88>;
> +       vdda-pll-supply = <&vreg_l8c_1p2>;
> +};
> +
>  &tlmm {
>         gpio-reserved-ranges = <0 4>;
>
> +       bt_en_default: bt_en_default {
> +               mux {
> +                       pins = "gpio172";
> +                       function = "gpio";
> +               };
> +
> +               config {
> +                       pins = "gpio172";
> +                       drive-strength = <2>;
> +                       bias-pull-down;
> +               };
> +       };
> +
> +       wlan_en_default: wlan_en_default {
> +               mux {
> +                       pins = "gpio169";
> +                       function = "gpio";
> +               };
> +
> +               config {
> +                       pins = "gpio169";
> +                       drive-strength = <16>;
> +                       output-high;
> +                       bias-pull-up;
> +               };
> +       };
> +

Not related to PCIe

>         usb2phy_ac_en1_default: usb2phy_ac_en1_default {
>                 mux {
>                         pins = "gpio113";
> --
> 2.35.1
>


-- 
With best wishes
Dmitry

Re: [PATCH v3 7/7] arm64: dts: qcom: sa8155: Enable PCIe nodes

[Bhupesh Sharma]

Hi Dmitry,

On Thu, 3 Mar 2022 at 02:29, Dmitry Baryshkov
<dmitry.baryshkov@linaro.org> wrote:
>
> On Wed, 2 Mar 2022 at 23:31, Bhupesh Sharma <bhupesh.sharma@linaro.org> wrote:
> >
> > SA8155p ADP board supports the PCIe0 controller in the RC
> > mode (only). So add the support for the same.
> >
> > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > Cc: Vinod Koul <vkoul@kernel.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > ---
> >  arch/arm64/boot/dts/qcom/sa8155p-adp.dts | 42 ++++++++++++++++++++++++
> >  1 file changed, 42 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > index 8756c2b25c7e..3f6b3ee404f5 100644
> > --- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > +++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > @@ -387,9 +387,51 @@ &usb_2_qmpphy {
> >         vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
> >  };
> >
> > +&pcie0 {
> > +       status = "okay";
> > +};
> > +
> > +&pcie0_phy {
> > +       status = "okay";
> > +       vdda-phy-supply = <&vreg_l18c_0p88>;
> > +       vdda-pll-supply = <&vreg_l8c_1p2>;
> > +};
> > +
> > +&pcie1_phy {
> > +       vdda-phy-supply = <&vreg_l18c_0p88>;
> > +       vdda-pll-supply = <&vreg_l8c_1p2>;
> > +};
> > +
> >  &tlmm {
> >         gpio-reserved-ranges = <0 4>;
> >
> > +       bt_en_default: bt_en_default {
> > +               mux {
> > +                       pins = "gpio172";
> > +                       function = "gpio";
> > +               };
> > +
> > +               config {
> > +                       pins = "gpio172";
> > +                       drive-strength = <2>;
> > +                       bias-pull-down;
> > +               };
> > +       };
> > +
> > +       wlan_en_default: wlan_en_default {
> > +               mux {
> > +                       pins = "gpio169";
> > +                       function = "gpio";
> > +               };
> > +
> > +               config {
> > +                       pins = "gpio169";
> > +                       drive-strength = <16>;
> > +                       output-high;
> > +                       bias-pull-up;
> > +               };
> > +       };
> > +
>
> Not related to PCIe

Hmm.. I have no strong personal opinion on this, so let's see what
Bjorn thinks about the same.
My reasoning for keeping it here was to just capture that we have
'bt_en' and 'wlan_en' related tlmm details here, so that when you send
out the reworked QCAxxxx mfd series (see [1]) later, I can easily plug
it in for SA8155p ADP dts as well with the 'bt' and 'wlan' constructs.

[1]. https://lore.kernel.org/lkml/20210621223141.1638189-2-dmitry.baryshkov@linaro.org/T/

Regards.
Bhupesh

> >         usb2phy_ac_en1_default: usb2phy_ac_en1_default {
> >                 mux {
> >                         pins = "gpio113";
> > --
> > 2.35.1
> >
>
>
> --
> With best wishes
> Dmitry

Re: [PATCH v3 7/7] arm64: dts: qcom: sa8155: Enable PCIe nodes

[Bjorn Andersson]

On Thu 03 Mar 00:09 CST 2022, Bhupesh Sharma wrote:

> Hi Dmitry,
> 
> On Thu, 3 Mar 2022 at 02:29, Dmitry Baryshkov
> <dmitry.baryshkov@linaro.org> wrote:
> >
> > On Wed, 2 Mar 2022 at 23:31, Bhupesh Sharma <bhupesh.sharma@linaro.org> wrote:
> > >
> > > SA8155p ADP board supports the PCIe0 controller in the RC
> > > mode (only). So add the support for the same.
> > >
> > > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > > Cc: Vinod Koul <vkoul@kernel.org>
> > > Cc: Rob Herring <robh+dt@kernel.org>
> > > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> > > ---
> > >  arch/arm64/boot/dts/qcom/sa8155p-adp.dts | 42 ++++++++++++++++++++++++
> > >  1 file changed, 42 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > > index 8756c2b25c7e..3f6b3ee404f5 100644
> > > --- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > > +++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
> > > @@ -387,9 +387,51 @@ &usb_2_qmpphy {
> > >         vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
> > >  };
> > >
> > > +&pcie0 {
> > > +       status = "okay";
> > > +};
> > > +
> > > +&pcie0_phy {
> > > +       status = "okay";
> > > +       vdda-phy-supply = <&vreg_l18c_0p88>;
> > > +       vdda-pll-supply = <&vreg_l8c_1p2>;
> > > +};
> > > +
> > > +&pcie1_phy {
> > > +       vdda-phy-supply = <&vreg_l18c_0p88>;
> > > +       vdda-pll-supply = <&vreg_l8c_1p2>;
> > > +};
> > > +
> > >  &tlmm {
> > >         gpio-reserved-ranges = <0 4>;
> > >
> > > +       bt_en_default: bt_en_default {

'_' is not a valid character in the node name (it is in the label).

> > > +               mux {

Please flatten this, you can omit the mux and config subnodes and put
the properties directly in the state node.

> > > +                       pins = "gpio172";
> > > +                       function = "gpio";
> > > +               };
> > > +
> > > +               config {
> > > +                       pins = "gpio172";
> > > +                       drive-strength = <2>;
> > > +                       bias-pull-down;
> > > +               };
> > > +       };
> > > +
> > > +       wlan_en_default: wlan_en_default {
> > > +               mux {
> > > +                       pins = "gpio169";
> > > +                       function = "gpio";
> > > +               };
> > > +
> > > +               config {
> > > +                       pins = "gpio169";
> > > +                       drive-strength = <16>;
> > > +                       output-high;
> > > +                       bias-pull-up;
> > > +               };
> > > +       };
> > > +
> >
> > Not related to PCIe
> 
> Hmm.. I have no strong personal opinion on this, so let's see what
> Bjorn thinks about the same.
> My reasoning for keeping it here was to just capture that we have
> 'bt_en' and 'wlan_en' related tlmm details here, so that when you send
> out the reworked QCAxxxx mfd series (see [1]) later, I can easily plug
> it in for SA8155p ADP dts as well with the 'bt' and 'wlan' constructs.
> 

The BT_EN is unrelated to PCIe, and I'm not able to see where you select
the wlan_en_default state, so this would be dangling.

So the bt_en should come in a patch together with a bluetooth node and
the wlan_en_default should come with something that ensures that the
WiFi portion of the chip is powered and the gpio enabled.

Regards,
Bjorn

> [1]. https://lore.kernel.org/lkml/20210621223141.1638189-2-dmitry.baryshkov@linaro.org/T/
> 
> Regards.
> Bhupesh
> 
> > >         usb2phy_ac_en1_default: usb2phy_ac_en1_default {
> > >                 mux {
> > >                         pins = "gpio113";
> > > --
> > > 2.35.1
> > >
> >
> >
> > --
> > With best wishes
> > Dmitry

Re: [PATCH v3 5/7] PCI: qcom: Add SM8150 SoC support

[Rob Herring]

On Thu, Mar 03, 2022 at 02:00:43AM +0530, Bhupesh Sharma wrote:
> The PCIe IP (rev 1.5.0) on SM8150 SoC is similar to the one used on
> SM8250. Hence the support is added reusing the members of ops_1_9_0.
> 
> Cc: Vinod Koul <vkoul@kernel.org>
> Cc: Rob Herring <robh+dt@kernel.org>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
> ---
>  drivers/pci/controller/dwc/pcie-qcom.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Reviewed-by: Rob Herring <robh@kernel.org>