arm64: dts: ti: k3-am64-main: Add ELM (Error Location Module) node

The ELM module is used for GPMC NAND accesses for detecting
and correcting errors during reads due to NAND bitflips errors.

4-, 8-, and 16-bit error-correction levels are supported using
the BCH (Bose-ChaudhurI-Hocquenghem) algorithm.

Signed-off-by: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20220802104456.11069-3-rogerq@kernel.org

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 14238ba..d6aa236 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -1347,4 +1347,13 @@
                gpio-controller;
                #gpio-cells = <2>;
        };
+
+       elm0: ecc@25010000 {
+               compatible = "ti,am64-elm";
+               reg = <0x00 0x25010000 0x00 0x2000>;
+               interrupts = <GIC_SPI 132 IRQ_TYPE_LEVEL_HIGH>;
+               power-domains = <&k3_pds 54 TI_SCI_PD_EXCLUSIVE>;
+               clocks = <&k3_clks 54 0>;
+               clock-names = "fck";
+       };
 };

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index eaaedd5..5cf9138 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -680,3 +680,7 @@
 &gpmc0 {
        status = "disabled";
 };
+
+&elm0 {
+       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 360c177..57c3951 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -611,3 +611,7 @@
 &gpmc0 {
        status = "disabled";
 };
+
+&elm0 {
+       status = "disabled";
+};