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Message-ID: <517FA8F7.1080609@elopez.com.ar>
Date: Tue, 30 Apr 2013 08:20:23 -0300
From: Emilio López <emilio@...pez.com.ar>
To: Maxime Ripard <maxime.ripard@...e-electrons.com>
CC: linux-arm-kernel@...ts.infradead.org,
Mike Turquette <mturquette@...aro.org>,
linux-doc@...r.kernel.org, Emilio Lopez <emilio@...pez.com.ar>,
devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
Rob Herring <rob.herring@...xeda.com>,
Grant Likely <grant.likely@...retlab.ca>,
Rob Landley <rob@...dley.net>
Subject: Re: [PATCH 1/2] clk: sun5i: Add compatibles for Allwinner A13
Hi Maxime,
El 30/04/13 06:56, Maxime Ripard escribió:
> The A13 has a lot less clocks than the one found in the Allwinner A10.
> Add these stripped down clocks to the clock driver and in the
> documentation.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
This patch looks good to me.
Acked-by: Emilio López <emilio@...pez.com.ar>
> ---
> Documentation/devicetree/bindings/clock/sunxi.txt | 117 +++------------------
> .../bindings/clock/sunxi/sun4i-a10-gates.txt | 93 ++++++++++++++++
> .../bindings/clock/sunxi/sun5i-a13-gates.txt | 58 ++++++++++
> drivers/clk/sunxi/clk-sunxi.c | 31 ++++--
> 4 files changed, 187 insertions(+), 112 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/clock/sunxi/sun4i-a10-gates.txt
> create mode 100644 Documentation/devicetree/bindings/clock/sunxi/sun5i-a13-gates.txt
>
> diff --git a/Documentation/devicetree/bindings/clock/sunxi.txt b/Documentation/devicetree/bindings/clock/sunxi.txt
> index 729f524..d495521 100644
> --- a/Documentation/devicetree/bindings/clock/sunxi.txt
> +++ b/Documentation/devicetree/bindings/clock/sunxi.txt
> @@ -12,22 +12,30 @@ Required properties:
> "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-ahb-gates-clk" - for the AHB gates on A10
> + "allwinner,sun5i-a13-ahb-gates-clk" - for the AHB gates on A13
> "allwinner,sun4i-apb0-clk" - for the APB0 clock
> - "allwinner,sun4i-apb0-gates-clk" - for the APB0 gates
> + "allwinner,sun4i-apb0-gates-clk" - for the APB0 gates on A10
> + "allwinner,sun5i-a13-apb0-gates-clk" - for the APB0 gates on A13
> "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
> + "allwinner,sun4i-apb1-gates-clk" - for the APB1 gates on A10
> + "allwinner,sun5i-a13-apb1-gates-clk" - for the APB1 gates on A13
>
> 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 except for
> - "allwinner,sun4i-*-gates-clk" where it shall be set to 1
> + "allwinner,*-gates-clk" where it shall be set to 1
>
> -Additionally, "allwinner,sun4i-*-gates-clk" clocks require:
> +Additionally, "allwinner,*-gates-clk" clocks require:
> - clock-output-names : the corresponding gate names that the clock controls
>
> +Clock consumers should specify the desired clocks they use with a
> +"clocks" phandle cell. Consumers that are using a gated clock should
> +provide an additional ID in their clock property. The values of this
> +ID are documented in sunxi/<soc>-gates.txt.
> +
> For example:
>
> osc24M: osc24M@...20050 {
> @@ -50,102 +58,3 @@ cpu: cpu@...20054 {
> 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
> diff --git a/Documentation/devicetree/bindings/clock/sunxi/sun4i-a10-gates.txt b/Documentation/devicetree/bindings/clock/sunxi/sun4i-a10-gates.txt
> new file mode 100644
> index 0000000..6a03475
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/sunxi/sun4i-a10-gates.txt
> @@ -0,0 +1,93 @@
> +Gate clock outputs
> +------------------
> +
> + * 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_FE1 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
> diff --git a/Documentation/devicetree/bindings/clock/sunxi/sun5i-a13-gates.txt b/Documentation/devicetree/bindings/clock/sunxi/sun5i-a13-gates.txt
> new file mode 100644
> index 0000000..006b6df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/sunxi/sun5i-a13-gates.txt
> @@ -0,0 +1,58 @@
> +Gate clock outputs
> +------------------
> +
> + * AXI gates ("allwinner,sun4i-axi-gates-clk")
> +
> + DRAM 0
> +
> + * AHB gates ("allwinner,sun5i-a13-ahb-gates-clk")
> +
> + USBOTG 0
> + EHCI 1
> + OHCI 2
> +
> + SS 5
> + DMA 6
> + BIST 7
> + MMC0 8
> + MMC1 9
> + MMC2 10
> +
> + NAND 13
> + SDRAM 14
> +
> + SPI0 20
> + SPI1 21
> + SPI2 22
> +
> + STIMER 28
> +
> + VE 32
> +
> + LCD 36
> +
> + CSI 40
> +
> + DE_BE 44
> +
> + DE_FE 46
> +
> + IEP 51
> + MALI400 52
> +
> + * APB0 gates ("allwinner,sun5i-a13-apb0-gates-clk")
> +
> + CODEC 0
> +
> + PIO 5
> + IR 6
> +
> + * APB1 gates ("allwinner,sun5i-a13-apb1-gates-clk")
> +
> + I2C0 0
> + I2C1 1
> + I2C2 2
> +
> + UART1 17
> +
> + UART3 19
> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index 8492ad1..930d36f 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -333,22 +333,34 @@ struct gates_data {
> DECLARE_BITMAP(mask, SUNXI_GATES_MAX_SIZE);
> };
>
> -static const __initconst struct gates_data axi_gates_data = {
> +static const __initconst struct gates_data sun4i_axi_gates_data = {
> .mask = {1},
> };
>
> -static const __initconst struct gates_data ahb_gates_data = {
> +static const __initconst struct gates_data sun4i_ahb_gates_data = {
> .mask = {0x7F77FFF, 0x14FB3F},
> };
>
> -static const __initconst struct gates_data apb0_gates_data = {
> +static const __initconst struct gates_data sun5i_a13_ahb_gates_data = {
> + .mask = {0x107067e7, 0x185111},
If you send a v2 please use uppercase e and a below for consistency.
> +};
> +
> +static const __initconst struct gates_data sun4i_apb0_gates_data = {
> .mask = {0x4EF},
> };
>
> -static const __initconst struct gates_data apb1_gates_data = {
> +static const __initconst struct gates_data sun5i_a13_apb0_gates_data = {
> + .mask = {0x61},
> +};
> +
> +static const __initconst struct gates_data sun4i_apb1_gates_data = {
> .mask = {0xFF00F7},
> };
>
> +static const __initconst struct gates_data sun5i_a13_apb1_gates_data = {
> + .mask = {0xa0007},
> +};
> +
> static void __init sunxi_gates_clk_setup(struct device_node *node,
> struct gates_data *data)
> {
> @@ -428,10 +440,13 @@ static const __initconst struct of_device_id clk_mux_match[] = {
>
> /* Matches for gate clocks */
> static const __initconst struct of_device_id clk_gates_match[] = {
> - {.compatible = "allwinner,sun4i-axi-gates-clk", .data = &axi_gates_data,},
> - {.compatible = "allwinner,sun4i-ahb-gates-clk", .data = &ahb_gates_data,},
> - {.compatible = "allwinner,sun4i-apb0-gates-clk", .data = &apb0_gates_data,},
> - {.compatible = "allwinner,sun4i-apb1-gates-clk", .data = &apb1_gates_data,},
> + {.compatible = "allwinner,sun4i-axi-gates-clk", .data = &sun4i_axi_gates_data,},
> + {.compatible = "allwinner,sun4i-ahb-gates-clk", .data = &sun4i_ahb_gates_data,},
> + {.compatible = "allwinner,sun5i-a13-ahb-gates-clk", .data = &sun5i_a13_ahb_gates_data,},
> + {.compatible = "allwinner,sun4i-apb0-gates-clk", .data = &sun4i_apb0_gates_data,},
> + {.compatible = "allwinner,sun5i-a13-apb0-gates-clk", .data = &sun5i_a13_apb0_gates_data,},
> + {.compatible = "allwinner,sun4i-apb1-gates-clk", .data = &sun4i_apb1_gates_data,},
> + {.compatible = "allwinner,sun5i-a13-apb1-gates-clk", .data = &sun5i_a13_apb1_gates_data,},
> {}
> };
>
>
Thanks!
Emilio
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