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Thu, 03 Jul 2025 01:39:49 -0700 (PDT) From: Jerome Brunet To: Chuan Liu Cc: Neil Armstrong , Michael Turquette , Stephen Boyd , Kevin Hilman , Martin Blumenstingl , linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 24/26] clk: amlogic: add composite clock helpers In-Reply-To: (Chuan Liu's message of "Thu, 3 Jul 2025 15:24:50 +0800") References: <20250702-meson-clk-cleanup-24-v1-0-e163c9a1fc21@baylibre.com> <20250702-meson-clk-cleanup-24-v1-24-e163c9a1fc21@baylibre.com> User-Agent: mu4e 1.12.9; emacs 30.1 Date: Thu, 03 Jul 2025 10:39:49 +0200 Message-ID: <1j5xg9d5wq.fsf@starbuckisacylon.baylibre.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Thu 03 Jul 2025 at 15:24, Chuan Liu wrote: > Hi Jerome: > > > On 7/2/2025 11:26 PM, Jerome Brunet wrote: >> [ EXTERNAL EMAIL ] >> >> Device composite clocks tend to reproduce the usual sel/div/gate >> arrangement. >> >> Add macros to help define simple composite clocks in the system. >> >> The idea is _not_ to replace all instances of mux, div or gate with those >> macros. It is rather to use it for recurring and/or simple composite >> clocks, reducing controller verbosity where it makes sense. This should >> help reviews focus on the tricky parts. >> >> Signed-off-by: Jerome Brunet >> --- >> drivers/clk/meson/meson-clkc-utils.h | 57 ++++++++++++++++++++++++++++++++++++ >> 1 file changed, 57 insertions(+) >> >> diff --git a/drivers/clk/meson/meson-clkc-utils.h b/drivers/clk/meson/meson-clkc-utils.h >> index 95d9f85f7ca22f63a16f8665d6f7a250b21bfdb8..ddadf14b4923781d8807546f35a1ba2e6a8a894a 100644 >> --- a/drivers/clk/meson/meson-clkc-utils.h >> +++ b/drivers/clk/meson/meson-clkc-utils.h >> @@ -48,4 +48,61 @@ struct clk_regmap _name = { \ >> #define MESON_PCLK_RO(_name, _reg, _bit, _pdata, _flags) \ >> __MESON_PCLK(_name, _reg, _bit, &clk_regmap_gate_ro_ops, _pdata, _flags) >> >> +/* Helpers for the usual sel/div/gate composite clocks */ >> +#define MESON_COMP_SEL(_prefix, _name, _reg, _shift, _mask, _pdata, \ >> + _table, _dflags, _iflags) \ >> +struct clk_regmap _prefix##_name##_sel = { \ > > > Can we apply the same naming style to the '**PCLK' clocks? The SoC prefix in > clock names looks inconsistent and awkward. Replied on patch 5 > > >> + .data = &(struct clk_regmap_mux_data) { \ >> + .offset = (_reg), \ >> + .mask = (_mask), \ >> + .shift = (_shift), \ >> + .flags = (_dflags), \ >> + .table = (_table), \ >> + }, \ >> + .hw.init = &(struct clk_init_data){ \ >> + .name = #_name "_sel", \ >> + .ops = &clk_regmap_mux_ops, \ >> + .parent_data = _pdata, \ >> + .num_parents = ARRAY_SIZE(_pdata), \ >> + .flags = (_iflags), \ >> + }, \ >> +} >> + >> +#define MESON_COMP_DIV(_prefix, _name, _reg, _shift, _width, \ >> + _dflags, _iflags) \ >> +struct clk_regmap _prefix##_name##_div = { \ >> + .data = &(struct clk_regmap_div_data) { \ >> + .offset = (_reg), \ >> + .shift = (_shift), \ >> + .width = (_width), \ >> + .flags = (_dflags), \ >> + }, \ >> + .hw.init = &(struct clk_init_data) { \ >> + .name = #_name "_div", \ >> + .ops = &clk_regmap_divider_ops, \ >> + .parent_hws = (const struct clk_hw *[]) { \ >> + &_prefix##_name##_sel.hw \ >> + }, \ >> + .num_parents = 1, \ >> + .flags = (_iflags), \ >> + }, \ >> +} >> + >> +#define MESON_COMP_GATE(_prefix, _name, _reg, _bit, _iflags) \ >> +struct clk_regmap _prefix##_name = { \ >> + .data = &(struct clk_regmap_gate_data) { \ >> + .offset = (_reg), \ >> + .bit_idx = (_bit), \ >> + }, \ >> + .hw.init = &(struct clk_init_data) { \ >> + .name = #_name, \ >> + .ops = &clk_regmap_gate_ops, \ >> + .parent_hws = (const struct clk_hw *[]) { \ >> + &_prefix##_name##_div.hw \ >> + }, \ >> + .num_parents = 1, \ >> + .flags = (_iflags), \ >> + }, \ >> +} >> + >> #endif >> >> -- >> 2.47.2 >> >> >> _______________________________________________ >> linux-amlogic mailing list >> linux-amlogic@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-amlogic -- Jerome