Hi Alain
3/30/21 10:51 PM, Alain Volmat wrote:
> In order to avoid relying on the old style description via the DT
> clock-output-names, add compatible data describing the flexgen
> outputs clocks for all STiH407/STiH410 and STiH418 SOCs.
>
> In order to ease transition between the two methods, this commit
> introduce the new compatible without removing the old method.
> Once DTs will be fixed, the method relying on DT clock-output-names
> will be removed from this driver as well as old compatibles.
>
> Signed-off-by: Alain Volmat <avolmat@xxxxxx>
> ---
> v3: avoid CLK_IS_CRITICAL. PLL are enabled whenever necessary thanks to
> child clock
> v2: clk-s-a0-pll-odf-0 don't need to be CLK_IS_CRITICAL
> mark several clock as CLK_IS_CRITICAL
>
> drivers/clk/st/clkgen-pll.c | 120 +++++++++++++++++++++++++++++++-----
> 1 file changed, 106 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
> index f6c56ca90c7d..b36e4d803636 100644
> --- a/drivers/clk/st/clkgen-pll.c
> +++ b/drivers/clk/st/clkgen-pll.c
> @@ -57,6 +57,17 @@ struct clkgen_pll_data {
> const struct clk_ops *ops;
> };
>
> +struct clkgen_clk_out {
> + const char *name;
> + unsigned long flags;
> +};
> +
> +struct clkgen_pll_data_clks {
> + struct clkgen_pll_data *data;
> + const struct clkgen_clk_out *outputs;
> +};
> +
> +
> static const struct clk_ops stm_pll3200c32_ops;
> static const struct clk_ops stm_pll3200c32_a9_ops;
> static const struct clk_ops stm_pll4600c28_ops;
> @@ -74,6 +85,28 @@ static const struct clkgen_pll_data st_pll3200c32_cx_0 = {
> .ops = &stm_pll3200c32_ops,
> };
>
> +static const struct clkgen_pll_data_clks st_pll3200c32_cx_0_legacy_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_cx_0,
> +};
> +
> +static const struct clkgen_clk_out st_pll3200c32_ax_0_clks[] = {
> + { .name = "clk-s-a0-pll-odf-0", },
> +};
> +
> +static const struct clkgen_pll_data_clks st_pll3200c32_a0_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_cx_0,
> + .outputs = st_pll3200c32_ax_0_clks,
> +};
> +
> +static const struct clkgen_clk_out st_pll3200c32_cx_0_clks[] = {
> + { .name = "clk-s-c0-pll0-odf-0", },
> +};
> +
> +static const struct clkgen_pll_data_clks st_pll3200c32_c0_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_cx_0,
> + .outputs = st_pll3200c32_cx_0_clks,
> +};
> +
> static const struct clkgen_pll_data st_pll3200c32_cx_1 = {
> /* 407 C0 PLL1 */
> .pdn_status = CLKGEN_FIELD(0x2c8, 0x1, 8),
> @@ -87,6 +120,19 @@ static const struct clkgen_pll_data st_pll3200c32_cx_1 = {
> .ops = &stm_pll3200c32_ops,
> };
>
> +static const struct clkgen_pll_data_clks st_pll3200c32_cx_1_legacy_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_cx_1,
> +};
> +
> +static const struct clkgen_clk_out st_pll3200c32_cx_1_clks[] = {
> + { .name = "clk-s-c0-pll1-odf-0", },
> +};
> +
> +static const struct clkgen_pll_data_clks st_pll3200c32_c1_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_cx_1,
> + .outputs = st_pll3200c32_cx_1_clks,
> +};
> +
> static const struct clkgen_pll_data st_pll3200c32_407_a9 = {
> /* 407 A9 */
> .pdn_status = CLKGEN_FIELD(0x1a8, 0x1, 0),
> @@ -104,6 +150,15 @@ static const struct clkgen_pll_data st_pll3200c32_407_a9 = {
> .ops = &stm_pll3200c32_a9_ops,
> };
>
> +static const struct clkgen_clk_out st_pll3200c32_407_a9_clks[] = {
> + { .name = "clockgen-a9-pll-odf", },
> +};
> +
> +static const struct clkgen_pll_data_clks st_pll3200c32_407_a9_data = {
> + .data = (struct clkgen_pll_data *)&st_pll3200c32_407_a9,
> + .outputs = st_pll3200c32_407_a9_clks,
> +};
> +
> static struct clkgen_pll_data st_pll4600c28_418_a9 = {
> /* 418 A9 */
> .pdn_status = CLKGEN_FIELD(0x1a8, 0x1, 0),
> @@ -120,6 +175,15 @@ static struct clkgen_pll_data st_pll4600c28_418_a9 = {
> .ops = &stm_pll4600c28_ops,
> };
>
> +static const struct clkgen_clk_out st_pll4600c28_418_a9_clks[] = {
> + { .name = "clockgen-a9-pll-odf", },
> +};
> +
> +static const struct clkgen_pll_data_clks st_pll4600c28_418_a9_data = {
> + .data = (struct clkgen_pll_data *)&st_pll4600c28_418_a9,
> + .outputs = st_pll4600c28_418_a9_clks,
> +};
> +
> /**
> * DOC: Clock Generated by PLL, rate set and enabled by bootloader
> *
> @@ -684,7 +748,7 @@ static struct clk * __init clkgen_odf_register(const char *parent_name,
>
>
> static void __init clkgen_c32_pll_setup(struct device_node *np,
> - struct clkgen_pll_data *data)
> + struct clkgen_pll_data_clks *datac)
> {
> struct clk *clk;
> const char *parent_name, *pll_name;
> @@ -704,14 +768,14 @@ static void __init clkgen_c32_pll_setup(struct device_node *np,
>
> of_clk_detect_critical(np, 0, &pll_flags);
>
> - clk = clkgen_pll_register(parent_name, data, pll_base, pll_flags,
> - np->name, data->lock);
> + clk = clkgen_pll_register(parent_name, datac->data, pll_base, pll_flags,
> + np->name, datac->data->lock);
> if (IS_ERR(clk))
> return;
>
> pll_name = __clk_get_name(clk);
>
> - num_odfs = data->num_odfs;
> + num_odfs = datac->data->num_odfs;
>
> clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
> if (!clk_data)
> @@ -729,14 +793,21 @@ static void __init clkgen_c32_pll_setup(struct device_node *np,
> const char *clk_name;
> unsigned long odf_flags = 0;
>
> - if (of_property_read_string_index(np, "clock-output-names",
> - odf, &clk_name))
> - return;
> + if (datac->outputs) {
> + clk_name = datac->outputs[odf].name;
> + odf_flags = datac->outputs[odf].flags;
> + } else {
> + if (of_property_read_string_index(np,
> + "clock-output-names",
> + odf, &clk_name))
> + return;
>
> - of_clk_detect_critical(np, odf, &odf_flags);
> + of_clk_detect_critical(np, odf, &odf_flags);
> + }
>
> - clk = clkgen_odf_register(pll_name, pll_base, data, odf_flags,
> - odf, &clkgena_c32_odf_lock, clk_name);
> + clk = clkgen_odf_register(pll_name, pll_base, datac->data,
> + odf_flags, odf, &clkgena_c32_odf_lock,
> + clk_name);
> if (IS_ERR(clk))
> goto err;
>
> @@ -754,27 +825,48 @@ static void __init clkgen_c32_pll_setup(struct device_node *np,
> static void __init clkgen_c32_pll0_setup(struct device_node *np)
> {
> clkgen_c32_pll_setup(np,
> - (struct clkgen_pll_data *) &st_pll3200c32_cx_0);
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_cx_0_legacy_data);
> }
> CLK_OF_DECLARE(c32_pll0, "st,clkgen-pll0", clkgen_c32_pll0_setup);
>
> +static void __init clkgen_c32_pll0_a0_setup(struct device_node *np)
> +{
> + clkgen_c32_pll_setup(np,
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_a0_data);
> +}
> +CLK_OF_DECLARE(c32_pll0_a0, "st,clkgen-pll0-a0", clkgen_c32_pll0_a0_setup);
> +
> +static void __init clkgen_c32_pll0_c0_setup(struct device_node *np)
> +{
> + clkgen_c32_pll_setup(np,
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_c0_data);
> +}
> +CLK_OF_DECLARE(c32_pll0_c0, "st,clkgen-pll0-c0", clkgen_c32_pll0_c0_setup);
> +
> static void __init clkgen_c32_pll1_setup(struct device_node *np)
> {
> clkgen_c32_pll_setup(np,
> - (struct clkgen_pll_data *) &st_pll3200c32_cx_1);
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_cx_1_legacy_data);
> }
> CLK_OF_DECLARE(c32_pll1, "st,clkgen-pll1", clkgen_c32_pll1_setup);
>
> +static void __init clkgen_c32_pll1_c0_setup(struct device_node *np)
> +{
> + clkgen_c32_pll_setup(np,
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_c1_data);
> +}
> +CLK_OF_DECLARE(c32_pll1_c0, "st,clkgen-pll1-c0", clkgen_c32_pll1_c0_setup);
> +
> static void __init clkgen_c32_plla9_setup(struct device_node *np)
> {
> clkgen_c32_pll_setup(np,
> - (struct clkgen_pll_data *) &st_pll3200c32_407_a9);
> + (struct clkgen_pll_data_clks *) &st_pll3200c32_407_a9_data);
> }
> CLK_OF_DECLARE(c32_plla9, "st,stih407-clkgen-plla9", clkgen_c32_plla9_setup);
>
> static void __init clkgen_c28_plla9_setup(struct device_node *np)
> {
> clkgen_c32_pll_setup(np,
> - (struct clkgen_pll_data *) &st_pll4600c28_418_a9);
> + (struct clkgen_pll_data_clks *) &st_pll4600c28_418_a9_data);
> }
> CLK_OF_DECLARE(c28_plla9, "st,stih418-clkgen-plla9", clkgen_c28_plla9_setup);
>
Reviewed-by: Patrice Chotard <patrice.chotard@xxxxxxxxxxx>
Thanks
