linux-kernel - [PATCH v2 1/2] arm64: dts: ti: k3-am64-main: Add GPMC memory controller node

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Date:   Wed,  8 Dec 2021 15:15:35 +0200
From:   Roger Quadros <rogerq@...nel.org>
To:     nm@...com
Cc:     kishon@...com, vigneshr@...com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Roger Quadros <rogerq@...nel.org>
Subject: [PATCH v2 1/2] arm64: dts: ti: k3-am64-main: Add GPMC memory controller node

The GPMC is a unified memory controller dedicated for interfacing
with external memory devices like
  - Asynchronous SRAM-like memories and ASICs
  - Asynchronous, synchronous, and page mode burst NOR flash
  - NAND flash
  - Pseudo-SRAM devices

Signed-off-by: Roger Quadros <rogerq@...nel.org>
---
 arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 19 +++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am642-evm.dts  |  4 ++++
 arch/arm64/boot/dts/ti/k3-am642-sk.dts   |  4 ++++
 3 files changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 5ad638b95ffc..830bfc0929b9 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -1253,4 +1253,23 @@
 			bus_freq = <1000000>;
 		};
 	};
+
+	gpmc0: memory-controller@...00000 {
+		compatible = "ti,am64-gpmc";
+		power-domains = <&k3_pds 80 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 80 0>;
+		clock-names = "fck";
+		reg = <0x00 0x03b000000 0x00 0x400>,
+		      <0x00 0x050000000 0x00 0x8000000>;
+		reg-names = "cfg", "data";
+		interrupts = <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
+		gpmc,num-cs = <3>;
+		gpmc,num-waitpins = <2>;
+		#address-cells = <2>;
+		#size-cells = <1>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 6726c4c7c28c..e13866a6e131 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -638,3 +638,7 @@
 &icssg1_mdio {
 	status = "disabled";
 };
+
+&gpmc0 {
+	status = "disabled";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 6b04745147be..e2793202af38 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -525,3 +525,7 @@
 &icssg1_mdio {
 	status = "disabled";
 };
+
+&gpmc0 {
+	status = "disabled";
+};
-- 
2.17.1