linux-kernel - [PATCH v3 1/2] arm64: dts: ti: k3-am64-main: Add GPMC memory controller node

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Date:   Fri,  4 Feb 2022 13:15:32 +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 v3 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 012011dc619a..94ea5c304d73 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -1289,4 +1289,23 @@
 		interrupt-names = "int0", "int1";
 		bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
 	};
+
+	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 e94ae178b1ae..6bd0c0876865 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -678,3 +678,7 @@
 	pinctrl-0 = <&main_mcan1_pins_default>;
 	phys = <&transceiver2>;
 };
+
+&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 a9785bec12df..40706aa61514 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -533,3 +533,7 @@
 &main_mcan1 {
 	status = "disabled";
 };
+
+&gpmc0 {
+	status = "disabled";
+};
-- 
2.17.1