arm64: dts: allwinner: a64: add SRAM controller device tree node

Allwinner A64 has a SRAM controller, and in the device tree currently
we have a syscon node to enable EMAC driver to access the EMAC clock
register. As SRAM controller driver can now export regmap for this
register, replace the syscon node to the SRAM controller device node,
and let EMAC driver to acquire its EMAC clock regmap.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
[wens@csie.org: Updated compatible string]
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Gbp-Pq: Topic features/arm64/pinebook
Gbp-Pq: Name 0005-arm64-dts-allwinner-a64-add-SRAM-controller-device-t.patch

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 2777b2d02d776ea8e962a8bd5ba8769c3629f5ae..ff2ddde1e1173e185d83d731409c2277e699e963 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -170,9 +170,24 @@
                ranges;
 
                syscon: syscon@1c00000 {
-                       compatible = "allwinner,sun50i-a64-system-controller",
-                               "syscon";
+                       compatible = "allwinner,sun50i-a64-system-control";
                        reg = <0x01c00000 0x1000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges;
+
+                       sram_c: sram@18000 {
+                               compatible = "mmio-sram";
+                               reg = <0x00018000 0x28000>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               ranges = <0 0x00018000 0x28000>;
+
+                               de2_sram: sram-section@0 {
+                                       compatible = "allwinner,sun50i-a64-sram-c";
+                                       reg = <0x0000 0x28000>;
+                               };
+                       };
                };
 
                dma: dma-controller@1c02000 {