(dropping linux-doc ML and Randy from Cc)
On 31/07/14 13:22, Humberto Silva Naves wrote:
> This implements the fixed rate clocks generated either inside or
> outside the SoC. It also adds a dt-binding constant for the
> sclk_hdmiphy clock, which shall be later used by other drivers,
> such as the DRM.
>
> Since the external fixed rate clock fin_pll is now registered by
> the clk-exynos5410 file, the bindings with the device tree file have
> changed. It is no longer needed to define fin_pll as a fixed clock,
> such as in:
>
> fin_pll: xxti {
> compatible = "fixed-clock";
> clock-frequency = <24000000>;
> clock-output-names = "fin_pll";
> #clock-cells = <0>;
> };
>
> The above lines should be replaced by the following lines:
>
> fixed-rate-clocks {
> oscclk {
> compatible = "samsung,exynos5410-oscclk";
> clock-frequency = <24000000>;
> };
> };
>
> This new form of binding was properly documented in the relevant
> documentation file.
Can you explain what is rationale behind this change ? Is it related to
suspend/resume ordering ?
Obviously it breaks the kernel/dtb compatibility. We should be moving
in opposite direction, i.e. completely remove the custom samsung fixed
rate clocks. I've tried to address this with patches [1], [2] but Tomasz
wasn't happy with them IIRC and I postponed work on that.
[1] http://www.spinics.net/lists/arm-kernel/msg333211.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-May/258490.html
--
Regards,
Sylwester
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