[U-Boot] [i.MX8MM+CCF 05/41] clk-provider: sync more clk flags from Linux Kernel

Lukasz Majewski
2019-05-06T22:01:27Z

On Tue, 30 Apr 2019 10:17:47 +0000
Peng Fan <peng.fan@nxp.com> wrote:

> Sync more clk flags that might be used in U-Boot CCF.
>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
> include/linux/clk-provider.h | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/include/linux/clk-provider.h
> b/include/linux/clk-provider.h index eac045c5f8..3458746a60 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -9,8 +9,29 @@
> #ifndef __LINUX_CLK_PROVIDER_H
> #define __LINUX_CLK_PROVIDER_H
>
> +/*
> + * flags used across common struct clk. these flags should only
> affect the
> + * top-level framework. custom flags for dealing with hardware
> specifics
> + * belong in struct clk_foo
> + *
> + * Please update clk_flags[] in drivers/clk/clk.c when making
> changes here!
> + */
> +#define CLK_SET_RATE_GATE BIT(0) /* must be gated across rate
> change */ +#define CLK_SET_PARENT_GATE BIT(1) /* must be gated
> across re-parent */ #define CLK_SET_RATE_PARENT BIT(2) /*
> propagate rate change up one level */ +#define
> CLK_IGNORE_UNUSED BIT(3) /* do not gate even if unused */
> + /* unused */
> +#define CLK_IS_BASIC BIT(5) /* Basic clk, can't do a
> to_clk_foo() */

> +#define CLK_GET_RATE_NOCACHE BIT(6) /* do not
> use the cached clk rate */

I guess that this is what your requested for the NOCACHE (to always
recalculate the rate).

> #define CLK_SET_RATE_NO_REPARENT BIT(7) /*
> don't re-parent on rate change */ +#define CLK_GET_ACCURACY_NOCACHE
> BIT(8) /* do not use the cached clk accuracy */ +#define
> CLK_RECALC_NEW_RATES BIT(9) /* recalc rates after
> notifications */ +#define CLK_SET_RATE_UNGATE BIT(10) /* clock
> needs to run to set rate */ +#define CLK_IS_CRITICAL
> BIT(11) /* do not gate, ever */ +/* parents need enable during
> gate/ungate, set rate and re-parent */ +#define
> CLK_OPS_PARENT_ENABLE BIT(12) +/* duty cycle call may be
> forwarded to the parent clock */ +#define
> CLK_DUTY_CYCLE_PARENT BIT(13) #define
> CLK_MUX_INDEX_ONE BIT(0) #define
> CLK_MUX_INDEX_BIT BIT(1)

Reviewed-by: Lukasz Majewski <lukma@denx.de>

Best regards,

Lukasz Majewski

--

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