[linux-sunxi] [PATCH v3 4/4] arm64: dts: allwinner: a64: add SRAM controller device tree node

From: Icenowy Zheng <icenowy@aosc.io>

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 at csie.org: Updated compatible string]
Signed-off-by: Chen-Yu Tsai <redacted>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 1b2ef28c42bd..87968dafe1dc 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

@@ -169,9 +169,24 @@
                ranges;

                syscon: syscon at 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 at 18000 {
+                               compatible = "mmio-sram";
+                               reg = <0x00018000 0x28000>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               ranges = <0 0x00018000 0x28000>;
+
+                               de2_sram: sram-section at 0 {