[PATCH v2 0/2] Enable SS/HS USB support on SM8150

[PATCH v2 0/2] Enable SS/HS USB support on SM8150

[Wesley Cheng]

Add required device tree nodes to enable the USB SS and HS
paths on the primary USB controller on SM8150.  In addition,
implement missing resources from the SM8150 GCC driver, which
includes the USB GDSC and the USB PIPE clocks.

Changes in v2:
 - Combine GDSC and USB PIPE clock changes.
 - Re-order DTS nodes based on address

Jack Pham (1):
  arm64: dts: qcom: sm8150: Add USB and PHY device nodes

Wesley Cheng (1):
  clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

 arch/arm64/boot/dts/qcom/sm8150-mtp.dts     | 17 ++++++
 arch/arm64/boot/dts/qcom/sm8150.dtsi        | 92 +++++++++++++++++++++++++++++
 drivers/clk/qcom/gcc-sm8150.c               | 52 ++++++++++++++++
 include/dt-bindings/clock/qcom,gcc-sm8150.h |  4 ++
 4 files changed, 165 insertions(+)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 1/2] clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

[Wesley Cheng]

This adds the USB3 PIPE clock and GDSC structures, so
that the USB driver can vote for these resources to be
enabled/disabled when required.  Both are needed for SS
and HS USB paths to operate properly.  The GDSC will
allow the USB system to be brought out of reset, while
the PIPE clock is needed for data transactions between
the PHY and controller.

Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
---
 drivers/clk/qcom/gcc-sm8150.c               | 52 +++++++++++++++++++++++++++++
 include/dt-bindings/clock/qcom,gcc-sm8150.h |  4 +++
 2 files changed, 56 insertions(+)

diff --git a/drivers/clk/qcom/gcc-sm8150.c b/drivers/clk/qcom/gcc-sm8150.c
index 2087721..ef98fdc 100644
--- a/drivers/clk/qcom/gcc-sm8150.c
+++ b/drivers/clk/qcom/gcc-sm8150.c
@@ -21,6 +21,7 @@
 #include "clk-rcg.h"
 #include "clk-regmap.h"
 #include "reset.h"
+#include "gdsc.h"
 
 enum {
 	P_BI_TCXO,
@@ -3171,6 +3172,18 @@ enum {
 	},
 };
 
+static struct clk_branch gcc_usb3_prim_phy_pipe_clk = {
+	.halt_check = BRANCH_HALT_SKIP,
+	.clkr = {
+		.enable_reg = 0xf058,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gcc_usb3_prim_phy_pipe_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
 static struct clk_branch gcc_usb3_sec_clkref_clk = {
 	.halt_reg = 0x8c028,
 	.halt_check = BRANCH_HALT,
@@ -3218,6 +3231,18 @@ enum {
 	},
 };
 
+static struct clk_branch gcc_usb3_sec_phy_pipe_clk = {
+	.halt_check = BRANCH_HALT_SKIP,
+	.clkr = {
+		.enable_reg = 0x10058,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gcc_usb3_sec_phy_pipe_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
 /*
  * Clock ON depends on external parent 'config noc', so cant poll
  * delay and also mark as crtitical for video boot
@@ -3292,6 +3317,24 @@ enum {
 	},
 };
 
+static struct gdsc usb30_prim_gdsc = {
+		.gdscr = 0xf004,
+		.pd = {
+			.name = "usb30_prim_gdsc",
+		},
+		.pwrsts = PWRSTS_OFF_ON,
+		.flags = POLL_CFG_GDSCR,
+};
+
+static struct gdsc usb30_sec_gdsc = {
+		.gdscr = 0x10004,
+		.pd = {
+			.name = "usb30_sec_gdsc",
+		},
+		.pwrsts = PWRSTS_OFF_ON,
+		.flags = POLL_CFG_GDSCR,
+};
+
 static struct clk_regmap *gcc_sm8150_clocks[] = {
 	[GCC_AGGRE_NOC_PCIE_TBU_CLK] = &gcc_aggre_noc_pcie_tbu_clk.clkr,
 	[GCC_AGGRE_UFS_CARD_AXI_CLK] = &gcc_aggre_ufs_card_axi_clk.clkr,
@@ -3480,10 +3523,12 @@ enum {
 	[GCC_USB3_PRIM_PHY_AUX_CLK] = &gcc_usb3_prim_phy_aux_clk.clkr,
 	[GCC_USB3_PRIM_PHY_AUX_CLK_SRC] = &gcc_usb3_prim_phy_aux_clk_src.clkr,
 	[GCC_USB3_PRIM_PHY_COM_AUX_CLK] = &gcc_usb3_prim_phy_com_aux_clk.clkr,
+	[GCC_USB3_PRIM_PHY_PIPE_CLK] = &gcc_usb3_prim_phy_pipe_clk.clkr,
 	[GCC_USB3_SEC_CLKREF_CLK] = &gcc_usb3_sec_clkref_clk.clkr,
 	[GCC_USB3_SEC_PHY_AUX_CLK] = &gcc_usb3_sec_phy_aux_clk.clkr,
 	[GCC_USB3_SEC_PHY_AUX_CLK_SRC] = &gcc_usb3_sec_phy_aux_clk_src.clkr,
 	[GCC_USB3_SEC_PHY_COM_AUX_CLK] = &gcc_usb3_sec_phy_com_aux_clk.clkr,
+	[GCC_USB3_SEC_PHY_PIPE_CLK] = &gcc_usb3_sec_phy_pipe_clk.clkr,
 	[GCC_VIDEO_AHB_CLK] = &gcc_video_ahb_clk.clkr,
 	[GCC_VIDEO_AXI0_CLK] = &gcc_video_axi0_clk.clkr,
 	[GCC_VIDEO_AXI1_CLK] = &gcc_video_axi1_clk.clkr,
@@ -3527,6 +3572,11 @@ enum {
 	[GCC_USB_PHY_CFG_AHB2PHY_BCR] = { 0x6a000 },
 };
 
+static struct gdsc *gcc_sm8150_gdscs[] = {
+	[USB30_PRIM_GDSC] = &usb30_prim_gdsc,
+	[USB30_SEC_GDSC] = &usb30_sec_gdsc,
+};
+
 static const struct regmap_config gcc_sm8150_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
@@ -3541,6 +3591,8 @@ enum {
 	.num_clks = ARRAY_SIZE(gcc_sm8150_clocks),
 	.resets = gcc_sm8150_resets,
 	.num_resets = ARRAY_SIZE(gcc_sm8150_resets),
+	.gdscs = gcc_sm8150_gdscs,
+	.num_gdscs = ARRAY_SIZE(gcc_sm8150_gdscs),
 };
 
 static const struct of_device_id gcc_sm8150_match_table[] = {
diff --git a/include/dt-bindings/clock/qcom,gcc-sm8150.h b/include/dt-bindings/clock/qcom,gcc-sm8150.h
index 90d60ef..3e1a918 100644
--- a/include/dt-bindings/clock/qcom,gcc-sm8150.h
+++ b/include/dt-bindings/clock/qcom,gcc-sm8150.h
@@ -240,4 +240,8 @@
 #define GCC_USB30_SEC_BCR					27
 #define GCC_USB_PHY_CFG_AHB2PHY_BCR				28
 
+/* GCC GDSCRs */
+#define USB30_PRIM_GDSC                     4
+#define USB30_SEC_GDSC						5
+
 #endif
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v2 2/2] arm64: dts: qcom: sm8150: Add USB and PHY device nodes

[Wesley Cheng]

From: Jack Pham <jackp@codeaurora.org>

Add device nodes for the USB3 controller, QMP SS PHY and
SNPS HS PHY.

Signed-off-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8150-mtp.dts | 17 ++++++
 arch/arm64/boot/dts/qcom/sm8150.dtsi    | 92 +++++++++++++++++++++++++++++++++
 2 files changed, 109 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
index 8ab1661..edf0abc 100644
--- a/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8150-mtp.dts
@@ -408,3 +408,20 @@
 	vdda-pll-supply = <&vreg_l3c_1p2>;
 	vdda-pll-max-microamp = <19000>;
 };
+
+&usb_1_hsphy {
+	status = "okay";
+	vdda-pll-supply = <&vdd_usb_hs_core>;
+	vdda33-supply = <&vdda_usb_hs_3p1>;
+	vdda18-supply = <&vdda_usb_hs_1p8>;
+};
+
+&usb_1_qmpphy {
+	status = "okay";
+	vdda-phy-supply = <&vreg_l3c_1p2>;
+	vdda-pll-supply = <&vdda_usb_ss_dp_core_1>;
+};
+
+&usb_1 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index 141c21d..fd6c83a 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -621,6 +621,98 @@
 			};
 		};
 
+		usb_1_hsphy: phy@88e2000 {
+			compatible = "qcom,usb-snps-hs-7nm-phy",
+							"qcom,sm8150-usb-hs-phy";
+			reg = <0 0x088e2000 0 0x400>;
+			status = "disabled";
+			#phy-cells = <0>;
+
+			clocks = <&rpmhcc RPMH_CXO_CLK>;
+			clock-names = "ref";
+
+			resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
+		};
+
+		usb_1_qmpphy: phy@88e9000 {
+			compatible = "qcom,sm8150-qmp-usb3-phy";
+			reg = <0 0x088e9000 0 0x18c>,
+			      <0 0x088e8000 0 0x10>;
+			reg-names = "reg-base", "dp_com";
+			status = "disabled";
+			#clock-cells = <1>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+
+			clocks = <&gcc GCC_USB3_PRIM_PHY_AUX_CLK>,
+				 <&rpmhcc RPMH_CXO_CLK>,
+				 <&gcc GCC_USB3_PRIM_CLKREF_CLK>,
+				 <&gcc GCC_USB3_PRIM_PHY_COM_AUX_CLK>;
+			clock-names = "aux", "ref_clk_src", "ref", "com_aux";
+
+			resets = <&gcc GCC_USB3_DP_PHY_PRIM_BCR>,
+				 <&gcc GCC_USB3_PHY_PRIM_BCR>;
+			reset-names = "phy", "common";
+
+			usb_1_ssphy: lanes@88e9200 {
+				reg = <0 0x088e9200 0 0x200>,
+				      <0 0x088e9400 0 0x200>,
+				      <0 0x088e9c00 0 0x218>,
+				      <0 0x088e9600 0 0x200>,
+				      <0 0x088e9800 0 0x200>,
+				      <0 0x088e9a00 0 0x100>;
+				#phy-cells = <0>;
+				clocks = <&gcc GCC_USB3_PRIM_PHY_PIPE_CLK>;
+				clock-names = "pipe0";
+				clock-output-names = "usb3_phy_pipe_clk_src";
+			};
+		};
+
+		usb_1: usb@a6f8800 {
+			compatible = "qcom,sdm845-dwc3", "qcom,dwc3";
+			reg = <0 0x0a6f8800 0 0x400>;
+			status = "disabled";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			dma-ranges;
+
+			clocks = <&gcc GCC_CFG_NOC_USB3_PRIM_AXI_CLK>,
+				 <&gcc GCC_USB30_PRIM_MASTER_CLK>,
+				 <&gcc GCC_AGGRE_USB3_PRIM_AXI_CLK>,
+				 <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
+				 <&gcc GCC_USB30_PRIM_SLEEP_CLK>,
+				 <&gcc GCC_USB3_SEC_CLKREF_CLK>;
+			clock-names = "cfg_noc", "core", "iface", "mock_utmi",
+				      "sleep", "xo";
+
+			assigned-clocks = <&gcc GCC_USB30_PRIM_MOCK_UTMI_CLK>,
+					  <&gcc GCC_USB30_PRIM_MASTER_CLK>;
+			assigned-clock-rates = <19200000>, <150000000>;
+
+			interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 486 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 488 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 489 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "hs_phy_irq", "ss_phy_irq",
+					  "dm_hs_phy_irq", "dp_hs_phy_irq";
+
+			power-domains = <&gcc USB30_PRIM_GDSC>;
+
+			resets = <&gcc GCC_USB30_PRIM_BCR>;
+
+			usb_1_dwc3: dwc3@a600000 {
+				compatible = "snps,dwc3";
+				reg = <0 0x0a600000 0 0xcd00>;
+				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
+				snps,dis_u2_susphy_quirk;
+				snps,dis_enblslpm_quirk;
+				phys = <&usb_1_hsphy>, <&usb_1_ssphy>;
+				phy-names = "usb2-phy", "usb3-phy";
+			};
+		};
+
 		aoss_qmp: power-controller@c300000 {
 			compatible = "qcom,sm8150-aoss-qmp";
 			reg = <0x0 0x0c300000 0x0 0x100000>;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v2 1/2] clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

[Stephen Boyd]

Quoting Wesley Cheng (2020-03-17 13:53:31)
> This adds the USB3 PIPE clock and GDSC structures, so
> that the USB driver can vote for these resources to be
> enabled/disabled when required.  Both are needed for SS
> and HS USB paths to operate properly.  The GDSC will
> allow the USB system to be brought out of reset, while
> the PIPE clock is needed for data transactions between
> the PHY and controller.
> 
> Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
> Reviewed-by: Stephen Boyd <sboyd@kernel.org>
> ---

Applied to clk-next

Re: [PATCH v2 1/2] clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

[Stephen Boyd]

Quoting Wesley Cheng (2020-03-17 13:53:31)
> diff --git a/include/dt-bindings/clock/qcom,gcc-sm8150.h b/include/dt-bindings/clock/qcom,gcc-sm8150.h
> index 90d60ef..3e1a918 100644
> --- a/include/dt-bindings/clock/qcom,gcc-sm8150.h
> +++ b/include/dt-bindings/clock/qcom,gcc-sm8150.h
> @@ -240,4 +240,8 @@
>  #define GCC_USB30_SEC_BCR                                      27
>  #define GCC_USB_PHY_CFG_AHB2PHY_BCR                            28
>  
> +/* GCC GDSCRs */
> +#define USB30_PRIM_GDSC                     4
> +#define USB30_SEC_GDSC                                         5

BTW, should we expect more GDSCs at 0,1,2,3 here? Why wasn't that done
initially?

Re: [PATCH v2 1/2] clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

[Wesley Cheng]

On 3/20/2020 4:34 PM, Stephen Boyd wrote:
> Quoting Wesley Cheng (2020-03-17 13:53:31)
>> diff --git a/include/dt-bindings/clock/qcom,gcc-sm8150.h b/include/dt-bindings/clock/qcom,gcc-sm8150.h
>> index 90d60ef..3e1a918 100644
>> --- a/include/dt-bindings/clock/qcom,gcc-sm8150.h
>> +++ b/include/dt-bindings/clock/qcom,gcc-sm8150.h
>> @@ -240,4 +240,8 @@
>>  #define GCC_USB30_SEC_BCR                                      27
>>  #define GCC_USB_PHY_CFG_AHB2PHY_BCR                            28
>>  
>> +/* GCC GDSCRs */
>> +#define USB30_PRIM_GDSC                     4
>> +#define USB30_SEC_GDSC                                         5
> 
> BTW, should we expect more GDSCs at 0,1,2,3 here? Why wasn't that done
> initially?
> 

Hi Stephen,

Yes, I assume there should be more GDSCs being introduced, and I have
notified Taniya (our GCC POC) to upload the rest of the GDSC changes.  I
decided to keep it with values 4 and 5 in order to be consistent with
previous chipsets, but if you feel we should shuffle these values, then
I am OK with that as well.

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v2 1/2] clk: qcom: gcc: Add USB3 PIPE clock and GDSC for SM8150

[Stephen Boyd]

Quoting Wesley Cheng (2020-03-20 17:25:37)
> 
> 
> On 3/20/2020 4:34 PM, Stephen Boyd wrote:
> > Quoting Wesley Cheng (2020-03-17 13:53:31)
> >> diff --git a/include/dt-bindings/clock/qcom,gcc-sm8150.h b/include/dt-bindings/clock/qcom,gcc-sm8150.h
> >> index 90d60ef..3e1a918 100644
> >> --- a/include/dt-bindings/clock/qcom,gcc-sm8150.h
> >> +++ b/include/dt-bindings/clock/qcom,gcc-sm8150.h
> >> @@ -240,4 +240,8 @@
> >>  #define GCC_USB30_SEC_BCR                                      27
> >>  #define GCC_USB_PHY_CFG_AHB2PHY_BCR                            28
> >>  
> >> +/* GCC GDSCRs */
> >> +#define USB30_PRIM_GDSC                     4
> >> +#define USB30_SEC_GDSC                                         5
> > 
> > BTW, should we expect more GDSCs at 0,1,2,3 here? Why wasn't that done
> > initially?
> > 
> 
> Hi Stephen,
> 
> Yes, I assume there should be more GDSCs being introduced, and I have
> notified Taniya (our GCC POC) to upload the rest of the GDSC changes.  I
> decided to keep it with values 4 and 5 in order to be consistent with
> previous chipsets, but if you feel we should shuffle these values, then
> I am OK with that as well.
> 

If there are more GDSCs to come and fill the earlier numbers I'm OK to
wait. Consistency between different SoCs is not important.