arm64: dts: allwinner: a100: Add syscon nodes

The Allwinner A100 has a system configuration block, denoted as SYS_CFG
in the user manual's memory map. It is undocumented in the manual, but
a glance at the vendor tree shows this block is similar to its
predecessors in the A64 and H6. The A100 also has 3 SRAM blocks: A1, A2,
and C. Add all of these to the SoC's device tree.

Reviewed-by: Parthiban Nallathambi <parthiban@linumiz.com>
Signed-off-by: Cody Eksal <masterr3c0rd@epochal.quest>
Link: https://patch.msgid.link/20241218-a100-syscon-v2-2-dae60b9ce192@epochal.quest
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
index 29ac7716c7a5284ccf8af675db9c7d016785f0ff..a24adba201af29a3a117222c67da5d269629fa47 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
@@ -101,6 +101,39 @@
                #size-cells = <1>;
                ranges = <0 0 0 0x3fffffff>;
 
+               syscon: syscon@3000000 {
+                       compatible = "allwinner,sun50i-a100-system-control",
+                                    "allwinner,sun50i-a64-system-control";
+                       reg = <0x03000000 0x1000>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges;
+
+                       sram_a1: sram@20000 {
+                               compatible = "mmio-sram";
+                               reg = <0x00020000 0x4000>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               ranges = <0 0x00020000 0x4000>;
+                       };
+
+                       sram_c: sram@24000 {
+                               compatible = "mmio-sram";
+                               reg = <0x024000 0x21000>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               ranges = <0 0x024000 0x21000>;
+                       };
+
+                       sram_a2: sram@100000 {
+                               compatible = "mmio-sram";
+                               reg = <0x0100000 0x14000>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               ranges = <0 0x0100000 0x14000>;
+                       };
+               };
+
                ccu: clock@3001000 {
                        compatible = "allwinner,sun50i-a100-ccu";
                        reg = <0x03001000 0x1000>;