Hi CLaudiu,
On Mon, Dec 9, 2024 at 12:14 PM Claudiu Beznea <claudiu.beznea@xxxxxxxxx> wrote:
> On 09.12.2024 12:57, Geert Uytterhoeven wrote:
> > On Wed, Nov 13, 2024 at 2:35 PM Claudiu <claudiu.beznea@xxxxxxxxx> wrote:
> >> From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
> >>
> >> The 5P35023 and 5L35035 Versa 3 clock generator variants are different but
> >> the versaclock3 driver could be used with small adjustments. The features
> >> that are implemented in driver and differs b/w variants are the PLL2 Fvco
> >> and clock sel bit for SE2 clock. Adjust the driver to prepare for the
> >> addition of 5L35023 device.
> >>
> >> Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> >> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
> >
> > Thanks for your patch!
> >
> >> --- a/drivers/clk/clk-versaclock3.c
> >> +++ b/drivers/clk/clk-versaclock3.c
> >> @@ -166,12 +167,17 @@ struct vc3_div_data {
> >> struct vc3_hw_data {
> >> struct clk_hw hw;
> >> struct regmap *regmap;
> >> - const void *data;
> >> + void *data;
> >>
> >> u32 div_int;
> >> u32 div_frc;
> >> };
> >
> >> @@ -698,8 +706,6 @@ static struct vc3_hw_data clk_pll[] = {
> >> .num = VC3_PLL2,
> >> .int_div_msb_offs = VC3_PLL2_FB_INT_DIV_MSB,
> >> .int_div_lsb_offs = VC3_PLL2_FB_INT_DIV_LSB,
> >> - .vco_min = VC3_PLL2_VCO_MIN,
> >> - .vco_max = VC3_PLL2_VCO_MAX
> >> },
> >> .hw.init = &(struct clk_init_data) {
> >> .name = "pll2",
> >
> >> @@ -1029,9 +1037,16 @@ static int vc3_probe(struct i2c_client *client)
> >> clk_pfd[i].hw.init->name);
> >> }
> >>
> >> + data = i2c_get_match_data(client);
> >> +
> >> /* Register pll's */
> >> for (i = 0; i < ARRAY_SIZE(clk_pll); i++) {
> >> clk_pll[i].regmap = regmap;
> >> + if (i == VC3_PLL2) {
> >> + struct vc3_pll_data *pll_data = clk_pll[i].data;
> >> +
> >> + pll_data->vco = data->pll2_vco;
> >
> > You cannot modify the global clk_pll[] data, as it is shared when
> > there are multiple instances.
>
> By "multiple instances" do you mean, multiple versa3 devices using this
> driver? Do you know if we have such a board integrated, ATM?
Exactly.
Currently there are no such (upstream) users for 5p35023,
but e.g. the Beacon RZ/G2M kit has two 5p49v6965 instances.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
