On 06/21, Eugeniy Paltsev wrote:
> AXS10X boards manages it's clocks using various PLLs. These PLL has same
> dividers and corresponding control registers mapped to different addresses.
> So we add one common driver for such PLLs.
>
> Each PLL on AXS10X board consist of three dividers: IDIV, FBDIV and
> ODIV. Output clock value is managed using these dividers.
>
> We add pre-defined tables with supported rate values and appropriate
> configurations of IDIV, FBDIV and ODIV for each value.
>
> As of today we add support for PLLs that generate clock for the
> following devices:
> * ARC core on AXC CPU tiles.
> * ARC PGU on ARC SDP Mainboard.
> and more to come later.
>
> By this patch we add support for two plls (arc core pll and pgu pll),
> so we had to use two different init types: CLK_OF_DECLARE for arc core pll and
> regular probing for pgu pll.
>
> Acked-by: Rob Herring <robh at kernel.org>
> Acked-by: Jose Abreu <joabreu at synopsys.com>
>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev at synopsys.com>
> Signed-off-by: Vlad Zakharov <vzakhar at synopsys.com>
> Signed-off-by: Jose Abreu <joabreu at synopsys.com>
Sorry this missed the cutoff for new code for v4.13. Should be in
clk-next next week though.
> +}
> +
> +static inline struct axs10x_pll_clk *to_axs10x_pll_clk(struct clk_hw *hw)
> +{
> + return container_of(hw, struct axs10x_pll_clk, hw);
> +}
> +
> +static inline u32 axs10x_div_get_value(u32 reg)
> +{
> + if (PLL_REG_GET_BYPASS(reg))
> + return 1;
> +
> + return PLL_REG_GET_HIGH(reg) + PLL_REG_GET_LOW(reg);
> +}
> +
> +static inline u32 axs10x_encode_div(unsigned int id, int upd)
> +{
> + u32 div = 0;
> +
> + PLL_REG_SET_LOW(div, (id % 2 == 0) ? id >> 1 : (id >> 1) + 1);
> + PLL_REG_SET_HIGH(div, id >> 1);
> + PLL_REG_SET_EDGE(div, id % 2);
> + PLL_REG_SET_BYPASS(div, id == 1 ? 1 : 0);
> + PLL_REG_SET_NOUPD(div, !upd);
So sparse complains here about a "dubious !x & y". Perhaps this
can be changed to
PLL_REG_SET_NOUPD(div, upd == 0 ? 1 : 0);
That way sparse doesn't complain. I can make the change when
applying if you agree.
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