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Sat, 06 Sep 2025 11:36:42 -0700 (PDT) Message-ID: <282ca7c4-7213-4e5d-9936-63687b5f4928@tuxon.dev> Date: Sat, 6 Sep 2025 21:36:41 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: claudiu beznea Subject: Re: [PATCH v3 09/32] clk: at91: clk-programmable: use clk_parent_data To: Ryan.Wanner@microchip.com, mturquette@baylibre.com, sboyd@kernel.org, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com Cc: varshini.rajendran@microchip.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, robh@kernel.org References: Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/10/25 23:07, Ryan.Wanner@microchip.com wrote: > From: Claudiu Beznea > > Use struct clk_parent_data instead of struct parent_hw as this leads > to less usage of __clk_get_hw() in SoC specific clock drivers and simpler > conversion of existing SoC specific clock drivers from parent_names to > modern clk_parent_data structures. > > Signed-off-by: Claudiu Beznea > [ryan.wanner@microchip.com: Add the clk-programmable changes to the > SAMA7D65 and SAM9X75 SoCs. Add td_slck_name variable and index for the > SAM9X75.] > Signed-off-by: Ryan Wanner > --- > drivers/clk/at91/clk-programmable.c | 8 ++++---- > drivers/clk/at91/pmc.h | 2 +- > drivers/clk/at91/sam9x7.c | 21 +++++++++++---------- > drivers/clk/at91/sama7d65.c | 20 ++++++++++---------- > drivers/clk/at91/sama7g5.c | 20 ++++++++++---------- > 5 files changed, 36 insertions(+), 35 deletions(-) > > diff --git a/drivers/clk/at91/clk-programmable.c b/drivers/clk/at91/clk-programmable.c > index 1195fb405503..275ca701f294 100644 > --- a/drivers/clk/at91/clk-programmable.c > +++ b/drivers/clk/at91/clk-programmable.c > @@ -215,7 +215,7 @@ static const struct clk_ops programmable_ops = { > struct clk_hw * __init > at91_clk_register_programmable(struct regmap *regmap, > const char *name, const char **parent_names, > - struct clk_hw **parent_hws, u8 num_parents, u8 id, > + struct clk_parent_data *parent_data, u8 num_parents, u8 id, > const struct clk_programmable_layout *layout, > u32 *mux_table) > { > @@ -224,7 +224,7 @@ at91_clk_register_programmable(struct regmap *regmap, > struct clk_init_data init = {}; > int ret; > > - if (id > PROG_ID_MAX || !(parent_names || parent_hws)) > + if (id > PROG_ID_MAX || !(parent_names || parent_data)) > return ERR_PTR(-EINVAL); > > prog = kzalloc(sizeof(*prog), GFP_KERNEL); > @@ -233,8 +233,8 @@ at91_clk_register_programmable(struct regmap *regmap, > > init.name = name; > init.ops = &programmable_ops; > - if (parent_hws) > - init.parent_hws = (const struct clk_hw **)parent_hws; > + if (parent_data) > + init.parent_data = (const struct clk_parent_data *)parent_data; > else > init.parent_names = parent_names; > init.num_parents = num_parents; > diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h > index 54d472276fc9..34036f2d0578 100644 > --- a/drivers/clk/at91/pmc.h > +++ b/drivers/clk/at91/pmc.h > @@ -263,7 +263,7 @@ sam9x60_clk_register_frac_pll(struct regmap *regmap, spinlock_t *lock, > > struct clk_hw * __init > at91_clk_register_programmable(struct regmap *regmap, const char *name, > - const char **parent_names, struct clk_hw **parent_hws, > + const char **parent_names, struct clk_parent_data *parent_data, > u8 num_parents, u8 id, > const struct clk_programmable_layout *layout, > u32 *mux_table); > diff --git a/drivers/clk/at91/sam9x7.c b/drivers/clk/at91/sam9x7.c > index 945983f72140..86d624cd92b2 100644 > --- a/drivers/clk/at91/sam9x7.c > +++ b/drivers/clk/at91/sam9x7.c > @@ -737,10 +737,11 @@ static const struct { > > static void __init sam9x7_pmc_setup(struct device_node *np) > { > + u8 td_slck_index = 0, md_slck_index = 1, main_xtal_index = 2; > struct clk_range range = CLK_RANGE(0, 0); > const char *main_xtal_name = "main_xtal"; > + const char * const td_slck_name = "td_slck"; > const char *const md_slck_name = "md_slck"; > - u8 md_slck_index = 1, main_xtal_index = 2; > struct pmc_data *sam9x7_pmc; > const char *parent_names[9]; > void **clk_mux_buffer = NULL; > @@ -752,7 +753,7 @@ static void __init sam9x7_pmc_setup(struct device_node *np) > struct clk_hw *parent_hws[9]; > int i, j; > > - td_slck_hw = __clk_get_hw(of_clk_get_by_name(np, "td_slck")); > + td_slck_hw = __clk_get_hw(of_clk_get_by_name(np, td_slck_name)); Please use a pattern like: i = of_property_match_string(np, "clock-names", "td_slck"); if (i < 0) return; td_slck_name = of_clk_get_parent_name(np, i); Same sama7d65, sama7g5. > md_slck_hw = __clk_get_hw(of_clk_get_by_name(np, md_slck_name)); > main_xtal_hw = __clk_get_hw(of_clk_get_by_name(np, main_xtal_name)); > > @@ -880,20 +881,20 @@ static void __init sam9x7_pmc_setup(struct device_node *np) > if (IS_ERR(usbck_hw)) > goto err_free; > > - parent_hws[0] = md_slck_hw; > - parent_hws[1] = td_slck_hw; > - parent_hws[2] = sam9x7_pmc->chws[PMC_MAIN]; > - parent_hws[3] = sam9x7_pmc->chws[PMC_MCK]; > - parent_hws[4] = sam9x7_plls[PLL_ID_PLLA][PLL_COMPID_DIV0].hw; > - parent_hws[5] = sam9x7_plls[PLL_ID_UPLL][PLL_COMPID_DIV0].hw; > - parent_hws[6] = sam9x7_plls[PLL_ID_AUDIO][PLL_COMPID_DIV0].hw; > + parent_data[0] = AT91_CLK_PD_NAME(md_slck_name, md_slck_index); AT91_CLK_PD_NAME(md_slck_name); > + parent_data[1] = AT91_CLK_PD_NAME(td_slck_name, td_slck_index); AT91_CLK_PD_NAME(td_slck_name); Same sama7d65, sama7g5.