On Fri, May 23, 2014 at 03:51:20PM +0800, Chen-Yu Tsai wrote:
> The Allwinner A23 SoC has a PRCM unit like the previous A31 SoC.
> The differences are the AR100 clock can no longer be modified,
> and the APB0 clock has different divisors.
>
> This patch adds a compatible with a modified subdevice list for
> the A23.
>
> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
> ---
> .../devicetree/bindings/mfd/sun6i-prcm.txt | 2 +-
> drivers/mfd/sun6i-prcm.c | 30 ++++++++++++++++++++++
> 2 files changed, 31 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt b/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt
> index 1f5a31f..03c5a55 100644
> --- a/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt
> +++ b/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt
> @@ -4,7 +4,7 @@ PRCM is an MFD device exposing several Power Management related devices
> (like clks and reset controllers).
>
> Required properties:
> - - compatible: "allwinner,sun6i-a31-prcm"
> + - compatible: "allwinner,sun6i-a31-prcm" or "allwinner,sun8i-a23-prcm"
> - reg: The PRCM registers range
>
> The prcm node may contain several subdevices definitions:
> diff --git a/drivers/mfd/sun6i-prcm.c b/drivers/mfd/sun6i-prcm.c
> index 718fc4d..c96bb6c 100644
> --- a/drivers/mfd/sun6i-prcm.c
> +++ b/drivers/mfd/sun6i-prcm.c
> @@ -76,16 +76,46 @@ static const struct mfd_cell sun6i_a31_prcm_subdevs[] = {
> },
> };
>
> +static const struct mfd_cell sun8i_a23_prcm_subdevs[] = {
> + {
> + .name = "sun6i-a31-apb0-clk",
> + .of_compatible = "allwinner,sun8i-a23-apb0-clk",
> + .num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res),
> + .resources = sun6i_a31_apb0_clk_res,
> + },
> + {
> + .name = "sun6i-a31-apb0-gates-clk",
> + .of_compatible = "allwinner,sun6i-a31-apb0-gates-clk",
> + .num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res),
> + .resources = sun6i_a31_apb0_gates_clk_res,
> + },
Did I just have a brainfart, or didn't you just introduced an
sun8i-a23-apb0-gates-clk driver?
And there's no ar100 and ahb0 clocks ?
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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