[PATCH v4 1/7] clk: mediatek: Add fixed clocks support for Mediatek SoC.
From: James Liao <hidden>
Date: 2015-07-24 03:02:31
Also in:
linux-devicetree, linux-mediatek, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
This patch adds fixed clocks support by using CCF fixed-rate clock implementation. Signed-off-by: James Liao <redacted> --- drivers/clk/mediatek/clk-mtk.c | 23 +++++++++++++++++++++++ drivers/clk/mediatek/clk-mtk.h | 19 ++++++++++++++++++- 2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index 18444ae..f8307c3 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c@@ -49,6 +49,29 @@ err_out: return NULL; } +void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks, int num, + struct clk_onecell_data *clk_data) +{ + int i; + struct clk *clk; + + for (i = 0; i < num; i++) { + const struct mtk_fixed_clk *rc = &clks[i]; + + clk = clk_register_fixed_rate(NULL, rc->name, rc->parent, + rc->parent ? 0 : CLK_IS_ROOT, rc->rate); + + if (IS_ERR(clk)) { + pr_err("Failed to register clk %s: %ld\n", + rc->name, PTR_ERR(clk)); + continue; + } + + if (clk_data) + clk_data->clks[rc->id] = clk; + } +} + void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data) {
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 9dda9d8..f083dfc 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h@@ -25,6 +25,23 @@ #define MHZ (1000 * 1000) +struct mtk_fixed_clk { + int id; + const char *name; + const char *parent; + unsigned long rate; +}; + +#define FIXED_CLK(_id, _name, _parent, _rate) { \ + .id = _id, \ + .name = _name, \ + .parent = _parent, \ + .rate = _rate, \ + } + +void mtk_clk_register_fixed_clks(const struct mtk_fixed_clk *clks, + int num, struct clk_onecell_data *clk_data); + struct mtk_fixed_factor { int id; const char *name;
@@ -41,7 +58,7 @@ struct mtk_fixed_factor { .div = _div, \ } -extern void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, +void mtk_clk_register_factors(const struct mtk_fixed_factor *clks, int num, struct clk_onecell_data *clk_data); struct mtk_composite {
--
1.8.1.1.dirty