[PATCH v5 12/23] clk: starfive: Introduce idiv ops for inverted divider clocks
flat view
COOLING11d
SUPERSEDED
From: Changhuang Liang <changhuang.liang@starfivetech.com>
Date: 2026-09-30 12:44:15
Also in:
linux-clk, linux-devicetree, linux-hardening, linux-riscv, lkml
Subsystem:
common clk framework, starfive jh71x0 clock drivers, the rest · Maintainers:
Stephen Boyd, Brian Masney, Jerome Brunet, Emil Renner Berthing, Hal Feng, Linus Torvalds
Revision v5 of 6 in this series.
Revisions (6)
Some StarFive clocks only advertise the divider and invert capabilities (via JH71X0_CLK_INVERT, without ENABLE). Add the JH71X0_IDIV() macro to declare such clocks, and jh71x0_clk_idiv_ops, which combines the divider rate operations with get_phase/set_phase. Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> --- drivers/clk/starfive/clk-starfive-jh71x0.c | 12 ++++++++++++ drivers/clk/starfive/clk-starfive-jh71x0.h | 8 ++++++++ 2 files changed, 20 insertions(+)
diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.c b/drivers/clk/starfive/clk-starfive-jh71x0.c
index bb7706ede1a6..1f98f1f8f0a5 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.c
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.c@@ -302,6 +302,15 @@ static const struct clk_ops jh71x0_clk_inv_ops = { .debug_init = jh71x0_clk_debug_init, }; +static const struct clk_ops jh71x0_clk_idiv_ops = { + .get_phase = jh71x0_clk_get_phase, + .set_phase = jh71x0_clk_set_phase, + .recalc_rate = jh71x0_clk_recalc_rate, + .determine_rate = jh71x0_clk_determine_rate, + .set_rate = jh71x0_clk_set_rate, + .debug_init = jh71x0_clk_debug_init, +}; + const struct clk_ops *starfive_jh71x0_clk_ops(u32 max) { if (max & JH71X0_CLK_DIV_MASK) {
@@ -312,6 +321,9 @@ const struct clk_ops *starfive_jh71x0_clk_ops(u32 max) } if (max & JH71X0_CLK_ENABLE) return &jh71x0_clk_gdiv_ops; + else if (max & JH71X0_CLK_INVERT) + return &jh71x0_clk_idiv_ops; + if (max == JH71X0_CLK_FRAC_MAX) return &jh71x0_clk_fdiv_ops; return &jh71x0_clk_div_ops;
diff --git a/drivers/clk/starfive/clk-starfive-jh71x0.h b/drivers/clk/starfive/clk-starfive-jh71x0.h
index 2a1f0fb4cbb1..4cb3c2ef9525 100644
--- a/drivers/clk/starfive/clk-starfive-jh71x0.h
+++ b/drivers/clk/starfive/clk-starfive-jh71x0.h@@ -104,6 +104,14 @@ struct jh71x0_clk_data { .parents = { [0] = _parent }, \ } +#define JH71X0_IDIV(_idx, _name, _flags, _max, _parent) \ +[_idx] = { \ + .name = _name, \ + .flags = _flags, \ + .max = JH71X0_CLK_INVERT | (_max), \ + .parents = { [0] = _parent }, \ +} + struct jh71x0_clk { struct clk_hw hw; unsigned int idx;
--
2.25.1