On 28/06/2018 12:45, Stanley Chu wrote:
> This patch fixes bindings of existed "General Purpose Timer",
> and then add bindings of new "System Timer" on Mediatek SoCs.
>
> Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
> ---
> .../bindings/timer/mediatek,mtk-timer.txt | 38 ++++++++++++++++----
> 1 file changed, 32 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> index b1fe7e9..d42247b 100644
> --- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> +++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> @@ -1,5 +1,14 @@
> -Mediatek MT6577, MT6572 and MT6589 Timers
> ----------------------------------------
> +Mediatek Timers
> +---------------
> +
> +Mediatek SoCs have two different timers on different platforms,
> +- GPT (General Purpose Timer)
> +- SYST (System Timer)
> +
> +Please bind correct timers in each platforms.
> +
> +
> +** General Purpose Timer (GPT)
>
> Required properties:
> - compatible should contain:
> @@ -11,9 +20,8 @@ Required properties:
> * "mediatek,mt8135-timer" for MT8135 compatible timers
> * "mediatek,mt8173-timer" for MT8173 compatible timers
> * "mediatek,mt6577-timer" for MT6577 and all above compatible timers
> -- reg: Should contain location and length for timers register.
> -- clocks: Clocks driving the timer hardware. This list should include two
> - clocks. The order is system clock and as second clock the RTC clock.
> +- reg: Should contain location and length for GPT register.
> +- clocks: GPT is drived by system clock.
>
> Examples:
>
> @@ -21,5 +29,23 @@ Examples:
> compatible = "mediatek,mt6577-timer";
> reg = <0x10008000 0x80>;
> interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>;
> - clocks = <&system_clk>, <&rtc_clk>;
> + clocks = <&system_clk>;
> + };
> +
> +
> +** System Timer (SYST)
> +
> +Required properties:
> +- compatible: Should contain
> + * "mediatek,mt6765-systimer" for MT6765 compatible timers
> +- reg: Should contain the location and length for system timer registers.
> +- clocks: System timer is drived by system clock.
> +
> +Examples:
> +
> + systimer@10017000 {
> + compatible = "mediatek,mt6765-systimer";
why not "mediatek,mt6765-timer" ? for consistency.
> + reg = <0 0x10017000 0 0x1000>;
> + interrupts = <GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&system_clk>;
> };
>
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