| Message ID | 20190828172850.19871-6-vidyas@nvidia.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | PCI: tegra: Enable PCIe C5 controller of Tegra194 in p2972-0000 platform | expand |
On Wed, Aug 28, 2019 at 10:58:49PM +0530, Vidya Sagar wrote: > Add support to configure PCIe C5's sideband signals PERST# and CLKREQ# > as output and bi-directional signals respectively which unlike other > PCIe controllers sideband signals are not configured by default. > > Signed-off-by: Vidya Sagar <vidyas@nvidia.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> > --- > V3: > * None > > V2: > * None > > arch/arm64/boot/dts/nvidia/tegra194.dtsi | 38 +++++++++++++++++++++++- > 1 file changed, 37 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi > index adebbbf36bd0..3c0cf54f0aab 100644 > --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi > +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi > @@ -3,8 +3,9 @@ > #include <dt-bindings/gpio/tegra194-gpio.h> > #include <dt-bindings/interrupt-controller/arm-gic.h> > #include <dt-bindings/mailbox/tegra186-hsp.h> > -#include <dt-bindings/reset/tegra194-reset.h> > +#include <dt-bindings/pinctrl/pinctrl-tegra.h> > #include <dt-bindings/power/tegra194-powergate.h> > +#include <dt-bindings/reset/tegra194-reset.h> > #include <dt-bindings/thermal/tegra194-bpmp-thermal.h> > > / { > @@ -130,6 +131,38 @@ > }; > }; > > + pinmux: pinmux@2430000 { > + compatible = "nvidia,tegra194-pinmux"; > + reg = <0x2430000 0x17000 > + 0xc300000 0x4000>; > + > + status = "okay"; > + > + pex_rst_c5_out_state: pex_rst_c5_out { > + pex_rst { > + nvidia,pins = "pex_l5_rst_n_pgg1"; > + nvidia,schmitt = <TEGRA_PIN_DISABLE>; > + nvidia,lpdr = <TEGRA_PIN_ENABLE>; > + nvidia,enable-input = <TEGRA_PIN_DISABLE>; > + nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>; > + nvidia,tristate = <TEGRA_PIN_DISABLE>; > + nvidia,pull = <TEGRA_PIN_PULL_NONE>; > + }; > + }; > + > + clkreq_c5_bi_dir_state: clkreq_c5_bi_dir { > + clkreq { > + nvidia,pins = "pex_l5_clkreq_n_pgg0"; > + nvidia,schmitt = <TEGRA_PIN_DISABLE>; > + nvidia,lpdr = <TEGRA_PIN_ENABLE>; > + nvidia,enable-input = <TEGRA_PIN_ENABLE>; > + nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>; > + nvidia,tristate = <TEGRA_PIN_DISABLE>; > + nvidia,pull = <TEGRA_PIN_PULL_NONE>; > + }; > + }; > + }; > + > uarta: serial@3100000 { > compatible = "nvidia,tegra194-uart", "nvidia,tegra20-uart"; > reg = <0x03100000 0x40>; > @@ -1365,6 +1398,9 @@ > num-viewport = <8>; > linux,pci-domain = <5>; > > + pinctrl-names = "default"; > + pinctrl-0 = <&pex_rst_c5_out_state>, <&clkreq_c5_bi_dir_state>; > + > clocks = <&bpmp TEGRA194_CLK_PEX1_CORE_5>, > <&bpmp TEGRA194_CLK_PEX1_CORE_5M>; > clock-names = "core", "core_m"; > -- > 2.17.1 >
diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi index adebbbf36bd0..3c0cf54f0aab 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi @@ -3,8 +3,9 @@ #include <dt-bindings/gpio/tegra194-gpio.h> #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/mailbox/tegra186-hsp.h> -#include <dt-bindings/reset/tegra194-reset.h> +#include <dt-bindings/pinctrl/pinctrl-tegra.h> #include <dt-bindings/power/tegra194-powergate.h> +#include <dt-bindings/reset/tegra194-reset.h> #include <dt-bindings/thermal/tegra194-bpmp-thermal.h> / { @@ -130,6 +131,38 @@ }; }; + pinmux: pinmux@2430000 { + compatible = "nvidia,tegra194-pinmux"; + reg = <0x2430000 0x17000 + 0xc300000 0x4000>; + + status = "okay"; + + pex_rst_c5_out_state: pex_rst_c5_out { + pex_rst { + nvidia,pins = "pex_l5_rst_n_pgg1"; + nvidia,schmitt = <TEGRA_PIN_DISABLE>; + nvidia,lpdr = <TEGRA_PIN_ENABLE>; + nvidia,enable-input = <TEGRA_PIN_DISABLE>; + nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>; + nvidia,tristate = <TEGRA_PIN_DISABLE>; + nvidia,pull = <TEGRA_PIN_PULL_NONE>; + }; + }; + + clkreq_c5_bi_dir_state: clkreq_c5_bi_dir { + clkreq { + nvidia,pins = "pex_l5_clkreq_n_pgg0"; + nvidia,schmitt = <TEGRA_PIN_DISABLE>; + nvidia,lpdr = <TEGRA_PIN_ENABLE>; + nvidia,enable-input = <TEGRA_PIN_ENABLE>; + nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>; + nvidia,tristate = <TEGRA_PIN_DISABLE>; + nvidia,pull = <TEGRA_PIN_PULL_NONE>; + }; + }; + }; + uarta: serial@3100000 { compatible = "nvidia,tegra194-uart", "nvidia,tegra20-uart"; reg = <0x03100000 0x40>; @@ -1365,6 +1398,9 @@ num-viewport = <8>; linux,pci-domain = <5>; + pinctrl-names = "default"; + pinctrl-0 = <&pex_rst_c5_out_state>, <&clkreq_c5_bi_dir_state>; + clocks = <&bpmp TEGRA194_CLK_PEX1_CORE_5>, <&bpmp TEGRA194_CLK_PEX1_CORE_5M>; clock-names = "core", "core_m";
Add support to configure PCIe C5's sideband signals PERST# and CLKREQ# as output and bi-directional signals respectively which unlike other PCIe controllers sideband signals are not configured by default. Signed-off-by: Vidya Sagar <vidyas@nvidia.com> --- V3: * None V2: * None arch/arm64/boot/dts/nvidia/tegra194.dtsi | 38 +++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-)