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ARM: dts: sun7i: Add A20 SRAM and SRAM controller 

The A20 has a few SRAM that can be mapped either to a device or to the CPU,
with the mapping being controlled by a SRAM controller.

Add the SRAM controller, the SRAM that it drives and the section that can
be used by the various devices.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
hifive-unleashed-5.1
Maxime Ripard 2015-03-26 15:53:44 +01:00
parent 00f69ba94d
commit 0eb14a8dad
1 changed files with 37 additions and 0 deletions
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37
arch/arm/boot/dts/sun7i-a20.dtsi
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@ -534,6 +534,42 @@
#size-cells = <1>;
ranges;
sram-controller@01c00000 {
compatible = "allwinner,sun4i-a10-sram-controller";
reg = <0x01c00000 0x30>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
sram_a: sram@00000000 {
compatible = "mmio-sram";
reg = <0x00000000 0xc000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x00000000 0xc000>;
emac_sram: sram-section@8000 {
compatible = "allwinner,sun4i-a10-sram-a3-a4";
reg = <0x8000 0x4000>;
status = "disabled";
};
};
sram_d: sram@00010000 {
compatible = "mmio-sram";
reg = <0x00010000 0x1000>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x00010000 0x1000>;
otg_sram: sram-section@0000 {
compatible = "allwinner,sun4i-a10-sram-d";
reg = <0x0000 0x1000>;
status = "disabled";
};
};
};
nmi_intc: interrupt-controller@01c00030 {
compatible = "allwinner,sun7i-a20-sc-nmi";
interrupt-controller;
@ -583,6 +619,7 @@
reg = <0x01c0b000 0x1000>;
interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ahb_gates 17>;
allwinner,sram = <&emac_sram 1>;
status = "disabled";
};