On 10/21/2016 11:08 AM, Peter Griffin wrote:
> Lots of platforms contain clocks which if turned off would prove fatal.
> The only way to recover is to restart the board(s).  This driver takes
> references to clocks which are required to be always-on.  The Common
> Clk Framework will then take references to them.  This way they will
> not be turned off during the clk_disabled_unused() procedure.
> 
> In this patch we are identifying clocks, which if gated would render
> the STiH407 development board unserviceable.
> 
> Signed-off-by: Peter Griffin <[email protected]>
> ---
>  arch/arm/boot/dts/stih407-clock.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/stih407-clock.dtsi 
> b/arch/arm/boot/dts/stih407-clock.dtsi
> index 13029c0..34c119a 100644
> --- a/arch/arm/boot/dts/stih407-clock.dtsi
> +++ b/arch/arm/boot/dts/stih407-clock.dtsi
> @@ -101,6 +101,7 @@
>                               clocks = <&clk_sysin>;
>  
>                               clock-output-names = "clk-s-a0-pll-ofd-0";
> +                             clock-critical = <0>; /* clk-s-a0-pll-ofd-0 */
>                       };
>  
>                       clk_s_a0_flexgen: clk-s-a0-flexgen {
> @@ -112,6 +113,7 @@
>                                        <&clk_sysin>;
>  
>                               clock-output-names = "clk-ic-lmi0";
> +                             clock-critical = <CLK_IC_LMI0>;
>                       };
>               };
>  
> @@ -126,6 +128,7 @@
>                                            "clk-s-c0-fs0-ch1",
>                                            "clk-s-c0-fs0-ch2",
>                                            "clk-s-c0-fs0-ch3";
> +                     clock-critical = <0>; /* clk-s-c0-fs0-ch0 */
>               };
>  
>               clk_s_c0: clockgen-c@09103000 {
> @@ -139,6 +142,7 @@
>                               clocks = <&clk_sysin>;
>  
>                               clock-output-names = "clk-s-c0-pll0-odf-0";
> +                             clock-critical = <0>; /* clk-s-c0-pll0-odf-0 */
>                       };
>  
>                       clk_s_c0_pll1: clk-s-c0-pll1 {
> @@ -194,6 +198,12 @@
>                                                    "clk-main-disp",
>                                                    "clk-aux-disp",
>                                                    "clk-compo-dvp";
> +                             clock-critical = <CLK_PROC_STFE>,
> +                                              <CLK_ICN_CPU>,
> +                                              <CLK_TX_ICN_DMU>,
> +                                              <CLK_EXT2F_A9>,
> +                                              <CLK_ICN_LMI>,
> +                                              <CLK_ICN_SBC>;
>                       };
>               };
>  
> 

Acked-by: Patrice Chotard <[email protected]>

And applied !

Effectively, the job was done for STiH410 but i forgot to apply the same for 
STiH407

Thanks Peter  ;-)

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