[6/9] arm: stm32mp: add weak function to save vddcore

Add a weak functions to save the vddcore voltage value provided
in the OPP node when the clock tree is initialized.

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 arch/arm/mach-stm32mp/include/mach/sys_proto.h | 3 +++
 drivers/clk/clk_stm32mp1.c                     | 5 +++++
 2 files changed, 8 insertions(+)

Hi Patrick

On 4/21/20 5:11 PM, Patrick Delaunay wrote:
> Add a weak functions to save the vddcore voltage value provided
> in the OPP node when the clock tree is initialized.
>
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---
>
>  arch/arm/mach-stm32mp/include/mach/sys_proto.h | 3 +++
>  drivers/clk/clk_stm32mp1.c                     | 5 +++++
>  2 files changed, 8 insertions(+)
>
> diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> index 1617126bea..55193b5c2d 100644
> --- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> +++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
> @@ -43,3 +43,6 @@ void get_soc_name(char name[SOC_NAME_SIZE]);
>  u32 get_bootmode(void);
>  
>  int setup_mac_address(void);
> +
> +/* board power management : configure vddcore according OPP */
> +void board_vddcore_init(u32 voltage_mv);
> diff --git a/drivers/clk/clk_stm32mp1.c b/drivers/clk/clk_stm32mp1.c
> index baacc1abb5..5fccc03ba7 100644
> --- a/drivers/clk/clk_stm32mp1.c
> +++ b/drivers/clk/clk_stm32mp1.c
> @@ -1225,6 +1225,10 @@ bool stm32mp1_supports_opp(u32 opp_id, u32 cpu_type)
>  	}
>  }
>  
> +__weak void board_vddcore_init(u32 voltage_mv)
> +{
> +}
> +
>  /*
>   * gets OPP parameters (frequency in KHz and voltage in mV) from
>   * an OPP table subnode. Platform HW support capabilities are also checked.
> @@ -1302,6 +1306,7 @@ int stm32mp1_get_max_opp_freq(struct stm32mp1_clk_priv *priv, u64 *freq_hz)
>  		return -FDT_ERR_NOTFOUND;
>  
>  	*freq_hz = (u64)1000U * freq;
> +	board_vddcore_init(voltage);
>  
>  	return 0;
>  }

Reviewed-by: Patrice Chotard <patrice.chotard at st.com>

Thanks

Patrice