From 13569a709ad12aef4d9c2b352c92e95ab7dd201f Mon Sep 17 00:00:00 2001 From: Emilio López Date: Wed, 27 Mar 2013 18:20:37 -0300 Subject: clk: sunxi: Add support for AXI, AHB, APB0 and APB1 gates MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patchset adds DT support for all the AXI, AHB, APB0 and APB1 gates present on sunxi SoCs. Signed-off-by: Emilio López Reviewed-by: Gregory CLEMENT Signed-off-by: Mike Turquette --- Documentation/devicetree/bindings/clock/sunxi.txt | 109 +++++++++++++++++++++- 1 file changed, 108 insertions(+), 1 deletion(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt index 20b8479c276..729f52426fe 100644 --- a/Documentation/devicetree/bindings/clock/sunxi.txt +++ b/Documentation/devicetree/bindings/clock/sunxi.txt @@ -10,15 +10,23 @@ Required properties: "allwinner,sun4i-pll1-clk" - for the main PLL clock "allwinner,sun4i-cpu-clk" - for the CPU multiplexer clock "allwinner,sun4i-axi-clk" - for the AXI clock + "allwinner,sun4i-axi-gates-clk" - for the AXI gates "allwinner,sun4i-ahb-clk" - for the AHB clock + "allwinner,sun4i-ahb-gates-clk" - for the AHB gates "allwinner,sun4i-apb0-clk" - for the APB0 clock + "allwinner,sun4i-apb0-gates-clk" - for the APB0 gates "allwinner,sun4i-apb1-clk" - for the APB1 clock "allwinner,sun4i-apb1-mux-clk" - for the APB1 clock muxing + "allwinner,sun4i-apb1-gates-clk" - for the APB1 gates Required properties for all clocks: - reg : shall be the control register address for the clock. - clocks : shall be the input parent clock(s) phandle for the clock -- #clock-cells : from common clock binding; shall be set to 0. +- #clock-cells : from common clock binding; shall be set to 0 except for + "allwinner,sun4i-*-gates-clk" where it shall be set to 1 + +Additionally, "allwinner,sun4i-*-gates-clk" clocks require: +- clock-output-names : the corresponding gate names that the clock controls For example: @@ -42,3 +50,102 @@ cpu: cpu@01c20054 { reg = <0x01c20054 0x4>; clocks = <&osc32k>, <&osc24M>, <&pll1>; }; + + + +Gate clock outputs + +The "allwinner,sun4i-*-gates-clk" clocks provide several gatable outputs; +their corresponding offsets as present on sun4i are listed below. Note that +some of these gates are not present on sun5i. + + * AXI gates ("allwinner,sun4i-axi-gates-clk") + + DRAM 0 + + * AHB gates ("allwinner,sun4i-ahb-gates-clk") + + USB0 0 + EHCI0 1 + OHCI0 2* + EHCI1 3 + OHCI1 4* + SS 5 + DMA 6 + BIST 7 + MMC0 8 + MMC1 9 + MMC2 10 + MMC3 11 + MS 12** + NAND 13 + SDRAM 14 + + ACE 16 + EMAC 17 + TS 18 + + SPI0 20 + SPI1 21 + SPI2 22 + SPI3 23 + PATA 24 + SATA 25** + GPS 26* + + VE 32 + TVD 33 + TVE0 34 + TVE1 35 + LCD0 36 + LCD1 37 + + CSI0 40 + CSI1 41 + + HDMI 43 + DE_BE0 44 + DE_BE1 45 + DE_FE0 46 + DE_FE1 47 + + MP 50 + + MALI400 52 + + * APB0 gates ("allwinner,sun4i-apb0-gates-clk") + + CODEC 0 + SPDIF 1* + AC97 2 + IIS 3 + + PIO 5 + IR0 6 + IR1 7 + + KEYPAD 10 + + * APB1 gates ("allwinner,sun4i-apb1-gates-clk") + + I2C0 0 + I2C1 1 + I2C2 2 + + CAN 4 + SCR 5 + PS20 6 + PS21 7 + + UART0 16 + UART1 17 + UART2 18 + UART3 19 + UART4 20 + UART5 21 + UART6 22 + UART7 23 + +Notation: + [*]: The datasheet didn't mention these, but they are present on AW code + [**]: The datasheet had this marked as "NC" but they are used on AW code -- cgit v1.2.3-70-g09d2