arm64: tegra: Add QSPI controllers on Tegra234

This adds the QSPI controllers on the Tegra234 SoC and populates the
SPI NOR flash device for the Jetson AGX Orin platform.

Signed-off-by: Ashish Singhal <ashishsingha@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
index d95a542..798de92 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
@@ -7,6 +7,18 @@
        compatible = "nvidia,p3701-0000", "nvidia,tegra234";
 
        bus@0 {
+               spi@3270000 {
+                       status = "okay";
+
+                       flash@0 {
+                               compatible = "jedec,spi-nor";
+                               reg = <0>;
+                               spi-max-frequency = <102000000>;
+                               spi-tx-bus-width = <4>;
+                               spi-rx-bus-width = <4>;
+                       };
+               };
+
                mmc@3460000 {
                        status = "okay";
                        bus-width = <8>;

diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index aaace60..448512a 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -654,6 +654,20 @@
                        reset-names = "i2c";
                };
 
+               spi@3270000 {
+                       compatible = "nvidia,tegra234-qspi";
+                       reg = <0x3270000 0x1000>;
+                       interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&bpmp TEGRA234_CLK_QSPI0_2X_PM>,
+                                <&bpmp TEGRA234_CLK_QSPI0_PM>;
+                       clock-names = "qspi", "qspi_out";
+                       resets = <&bpmp TEGRA234_RESET_QSPI0>;
+                       reset-names = "qspi";
+                       status = "disabled";
+               };
+
                pwm1: pwm@3280000 {
                        compatible = "nvidia,tegra194-pwm",
                                     "nvidia,tegra186-pwm";
@@ -666,6 +680,20 @@
                        #pwm-cells = <2>;
                };
 
+               spi@3300000 {
+                       compatible = "nvidia,tegra234-qspi";
+                       reg = <0x3300000 0x1000>;
+                       interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&bpmp TEGRA234_CLK_QSPI1_2X_PM>,
+                                <&bpmp TEGRA234_CLK_QSPI1_PM>;
+                       clock-names = "qspi", "qspi_out";
+                       resets = <&bpmp TEGRA234_RESET_QSPI1>;
+                       reset-names = "qspi";
+                       status = "disabled";
+               };
+
                mmc@3460000 {
                        compatible = "nvidia,tegra234-sdhci", "nvidia,tegra186-sdhci";
                        reg = <0x03460000 0x20000>;

diff --git a/include/dt-bindings/clock/tegra234-clock.h b/include/dt-bindings/clock/tegra234-clock.h
index 8cae969..bd4c308 100644 (file)
--- a/include/dt-bindings/clock/tegra234-clock.h
+++ b/include/dt-bindings/clock/tegra234-clock.h
@@ -140,6 +140,14 @@
 #define TEGRA234_CLK_PEX2_C9_CORE              173U
 /** @brief output of gate CLK_ENB_PEX2_CORE_10 */
 #define TEGRA234_CLK_PEX2_C10_CORE             187U
+/** @brief CLK_RST_CONTROLLER_CLK_SOURCE_QSPI0 switch divider output */
+#define TEGRA234_CLK_QSPI0_2X_PM               192U
+/** @brief CLK_RST_CONTROLLER_CLK_SOURCE_QSPI1 switch divider output */
+#define TEGRA234_CLK_QSPI1_2X_PM               193U
+/** @brief output of the divider QSPI_CLK_DIV2_SEL in CLK_RST_CONTROLLER_CLK_SOURCE_QSPI0 */
+#define TEGRA234_CLK_QSPI0_PM                  194U
+/** @brief output of the divider QSPI_CLK_DIV2_SEL in CLK_RST_CONTROLLER_CLK_SOURCE_QSPI1 */
+#define TEGRA234_CLK_QSPI1_PM                  195U
 /** @brief CLK_RST_CONTROLLER_CLK_SOURCE_SDMMC_LEGACY_TM switch divider output */
 #define TEGRA234_CLK_SDMMC_LEGACY_TM           219U
 /** @brief output of gate CLK_ENB_PEX0_CORE_0 */

diff --git a/include/dt-bindings/reset/tegra234-reset.h b/include/dt-bindings/reset/tegra234-reset.h
index 1362cd5..547ca3b 100644 (file)
--- a/include/dt-bindings/reset/tegra234-reset.h
+++ b/include/dt-bindings/reset/tegra234-reset.h
@@ -40,6 +40,8 @@
 #define TEGRA234_RESET_PWM6                    73U
 #define TEGRA234_RESET_PWM7                    74U
 #define TEGRA234_RESET_PWM8                    75U
+#define TEGRA234_RESET_QSPI0                   76U
+#define TEGRA234_RESET_QSPI1                   77U
 #define TEGRA234_RESET_SDMMC4                  85U
 #define TEGRA234_RESET_UARTA                   100U
 #define TEGRA234_RESET_PEX0_CORE_0             116U