[PATCH 1/2] arm: dts: Enable OSPI for AM62-SK

[Dhruva Gole]

The AM62x-SK EVM has an on-board OSPI Flash chip (Cypress S28HS512T).
Add the nodes in DT required to load the appropriate drivers to
start using the OSPI Flash on this board.

Signed-off-by: Dhruva Gole <d-gole at ti.com>
---
 arch/arm/dts/k3-am625-r5-sk.dts      |  5 ++
 arch/arm/dts/k3-am625-sk-u-boot.dtsi | 24 +++++++++
 arch/arm/dts/k3-am625-sk.dts         | 77 ++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)

diff --git a/arch/arm/dts/k3-am625-r5-sk.dts b/arch/arm/dts/k3-am625-r5-sk.dts
index 6d696e720de6..d39b334ed032 100644
--- a/arch/arm/dts/k3-am625-r5-sk.dts
+++ b/arch/arm/dts/k3-am625-r5-sk.dts
@@ -155,3 +155,8 @@
 	status = "okay";
 	u-boot,dm-spl;
 };
+
+&ospi0 {
+	reg = <0x00 0x0fc40000 0x00 0x100>,
+	      <0x00 0x60000000 0x00 0x08000000>;
+};
diff --git a/arch/arm/dts/k3-am625-sk-u-boot.dtsi b/arch/arm/dts/k3-am625-sk-u-boot.dtsi
index 159fa36bbe9f..92788bae3e09 100644
--- a/arch/arm/dts/k3-am625-sk-u-boot.dtsi
+++ b/arch/arm/dts/k3-am625-sk-u-boot.dtsi
@@ -102,3 +102,27 @@
 &main_mmc1_pins_default {
 	u-boot,dm-spl;
 };
+
+&fss {
+	u-boot,dm-spl;
+};
+
+&ospi0_pins_default {
+	u-boot,dm-spl;
+};
+
+&ospi0 {
+	u-boot,dm-spl;
+
+	flash at 0 {
+		u-boot,dm-spl;
+
+		partitions {
+			u-boot,dm-spl;
+
+			partition at 3fc0000 {
+				u-boot,dm-spl;
+			};
+		};
+	};
+};
diff --git a/arch/arm/dts/k3-am625-sk.dts b/arch/arm/dts/k3-am625-sk.dts
index 76b06ea23953..5d4b2fddafaa 100644
--- a/arch/arm/dts/k3-am625-sk.dts
+++ b/arch/arm/dts/k3-am625-sk.dts
@@ -19,6 +19,7 @@
 	aliases {
 		serial2 = &main_uart0;
 		mmc1 = &sdhci1;
+		spi0 = &ospi0;
 	};
 
 	chosen {
@@ -77,6 +78,23 @@
 			AM62X_IOPAD(0x240, PIN_INPUT, 0) /* (D17) MMC1_SDCD */
 		>;
 	};
+
+	ospi0_pins_default: ospi0-pins-default {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x000, PIN_OUTPUT, 0) /* (H24) OSPI0_CLK */
+			AM62X_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F23) OSPI0_CSn0 */
+			AM62X_IOPAD(0x00c, PIN_INPUT, 0) /* (E25) OSPI0_D0 */
+
+			AM62X_IOPAD(0x010, PIN_INPUT, 0) /* (G24) OSPI0_D1 */
+			AM62X_IOPAD(0x014, PIN_INPUT, 0) /* (F25) OSPI0_D2 */
+			AM62X_IOPAD(0x018, PIN_INPUT, 0) /* (F24) OSPI0_D3 */
+			AM62X_IOPAD(0x01c, PIN_INPUT, 0) /* (J23) OSPI0_D4 */
+			AM62X_IOPAD(0x020, PIN_INPUT, 0) /* (J25) OSPI0_D5 */
+			AM62X_IOPAD(0x024, PIN_INPUT, 0) /* (H25) OSPI0_D6 */
+			AM62X_IOPAD(0x028, PIN_INPUT, 0) /* (J22) OSPI0_D7 */
+			AM62X_IOPAD(0x008, PIN_INPUT, 0) /* (J24) OSPI0_DQS */
+		>;
+	};
 };
 
 &wkup_uart0 {
@@ -148,3 +166,62 @@
 	ti,driver-strength-ohm = <50>;
 	disable-wp;
 };
+
+&ospi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ospi0_pins_default>;
+
+	flash at 0{
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <8>;
+		spi-rx-bus-width = <8>;
+		spi-max-frequency = <25000000>;
+		cdns,tshsl-ns = <60>;
+		cdns,tsd2d-ns = <60>;
+		cdns,tchsh-ns = <60>;
+		cdns,tslch-ns = <60>;
+		cdns,read-delay = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition at 0 {
+				label = "ospi.tiboot3";
+				reg = <0x0 0x80000>;
+			};
+
+			partition at 80000 {
+				label = "ospi.tispl";
+				reg = <0x80000 0x200000>;
+			};
+
+			partition at 280000 {
+				label = "ospi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+
+			partition at 680000 {
+				label = "ospi.env";
+				reg = <0x680000 0x40000>;
+			};
+
+			partition at 6c0000 {
+				label = "ospi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+
+			partition at 800000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition at 3fc0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
+	};
+};
-- 
2.25.1