Hi Marek,
2016-11-16 22:06 GMT+09:00 Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>:
> UART3 device is not really needed for enabling audio block on TM2.
> Enabling it made it working by enabling some common parent clocks,
> what is now handled by improved exynos5433 clocks driver. Thus the UART3
> device node can be safetly disabled. The assigned-clocks entries are
> however still needed, so move them under the respective CMU node.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/exynos/exynos5433-tm2.dts | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
> index 506f8ab..5ab1028 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2.dts
> @@ -891,10 +891,9 @@
> status = "okay";
> };
>
> -&serial_3 {
> +&cmu_aud {
> assigned-clocks = <&cmu_aud CLK_MOUT_AUD_PLL_USER>;
> assigned-clock-parents = <&cmu_top CLK_FOUT_AUD_PLL>;
> - status = "okay";
> };
Looks good to me.
The UART3 of TM2 was used for bluetooth device. CLK_MOUT_AUD_PLL_USER
clock is the parent clock of CLK_SCLK_AUD_UART of uart3 for bluetooth.
So, in the legacy, we assigned the parent clock in the uart3
Device-tree node.
Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Best Regards,
Chanwoo Choi
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