On 09/28, Abhishek Sahu wrote:
> Alpha PLL is a generic name used for QCOM PLL’s which uses L
> and Alpha values for configuring the integer and fractional part.
> QCOM SoC’s use different types of Alpha PLL’s for which basic
> software configuration part is common with following differences.
>
> 1. All These PLL’s will have same basic registers like
> PLL_MODE, L_VAL, ALPHA_VAL but some of the register offsets are
> different in each PLL type.
> 2. PLL dynamic programming sequence will be different in some
> of the Alpha PLL’s
> 3. Some of the PLL won’t have 64 bit config control, 64 bit
> user control, VCO configuration etc.
>
> Now, this patch adds the Alpha PLL type in clock node and adds
> alpha PLL properties structure inside clk-alpha-pll.c. This PLL
> property will contain everything including register offsets, clock
> operations and other properties since all these properties will be
> fixed for Alpha PLL.
>
> This allows to support other types of Alpha PLL without addition
> of new flag and variable in structures of clk_alpha_pll.h. Also, we
> don’t have to add operation for each Alpha PLL’s and export them.
>
> In future, we can get rid of most of the flags like following
>
> struct clk_alpha_pll {
> #define SUPPORTS_OFFLINE_REQ BIT(0)
> #define SUPPORTS_16BIT_ALPHA BIT(1)
> #define SUPPORTS_FSM_MODE BIT(2)
> u8 flags;
> };
>
> struct clk_alpha_pll_postdiv {
> u8 width;
> };
>
> Since all the above properties will be always same for different
> instances of same type of Alpha PLL’s.
>
> Signed-off-by: Abhishek Sahu <absahu@xxxxxxxxxxxxxx>
> ---
Applied to clk-next
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