irqchip: sunxi: Rename sunxi to sun4i

During the introduction of the Allwinner SoC platforms, sunxi was
initially meant as a generic name for all the variants of the Allwinner
SoC.

It was ok at the time of the support of only the A10 and A13 that
looks pretty much the same, but it's beginning to be troublesome with
the future addition of the Allwinner A31 (sun6i) that is quite
different, and would introduce some weird logic, where sunxi would
actually mean in some case sun4i and sun5i but without sun6i...

Moreover, it makes the compatible strings naming scheme not consistent
with other architectures, where usually for this kind of compability, we
just use the oldest SoC name that has this IP, so let's do just this.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt b/Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt
new file mode 100644
index 000000000000..e7f4dc14eff2
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/allwinner,sun4i-ic.txt
@@ -0,0 +1,104 @@
+Allwinner Sunxi Interrupt Controller
+
+Required properties:
+
+- compatible : should be "allwinner,sun4i-ic"
+- reg : Specifies base physical address and size of the registers.
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+  interrupt source. The value shall be 1.
+
+The interrupt sources are as follows:
+
+0: ENMI
+1: UART0
+2: UART1
+3: UART2
+4: UART3
+5: IR0
+6: IR1
+7: I2C0
+8: I2C1
+9: I2C2
+10: SPI0
+11: SPI1
+12: SPI2
+13: SPDIF
+14: AC97
+15: TS
+16: I2S
+17: UART4
+18: UART5
+19: UART6
+20: UART7
+21: KEYPAD
+22: TIMER0
+23: TIMER1
+24: TIMER2
+25: TIMER3
+26: CAN
+27: DMA
+28: PIO
+29: TOUCH_PANEL
+30: AUDIO_CODEC
+31: LRADC
+32: SDMC0
+33: SDMC1
+34: SDMC2
+35: SDMC3
+36: MEMSTICK
+37: NAND
+38: USB0
+39: USB1
+40: USB2
+41: SCR
+42: CSI0
+43: CSI1
+44: LCDCTRL0
+45: LCDCTRL1
+46: MP
+47: DEFEBE0
+48: DEFEBE1
+49: PMU
+50: SPI3
+51: TZASC
+52: PATA
+53: VE
+54: SS
+55: EMAC
+56: SATA
+57: GPS
+58: HDMI
+59: TVE
+60: ACE
+61: TVD
+62: PS2_0
+63: PS2_1
+64: USB3
+65: USB4
+66: PLE_PFM
+67: TIMER4
+68: TIMER5
+69: GPU_GP
+70: GPU_GPMMU
+71: GPU_PP0
+72: GPU_PPMMU0
+73: GPU_PMU
+74: GPU_RSV0
+75: GPU_RSV1
+76: GPU_RSV2
+77: GPU_RSV3
+78: GPU_RSV4
+79: GPU_RSV5
+80: GPU_RSV6
+82: SYNC_TIMER0
+83: SYNC_TIMER1
+
+Example:
+
+intc: interrupt-controller {
+	compatible = "allwinner,sun4i-ic";
+	reg = <0x01c20400 0x400>;
+	interrupt-controller;
+	#interrupt-cells = <2>;
+};