diff options
author | James Liao <jamesjj.liao@mediatek.com> | 2015-07-10 11:39:15 +0800 |
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committer | James Liao <jamesjj.liao@mediatek.com> | 2015-10-01 12:04:49 +0800 |
commit | 4fa043806a2cdbf86503068276ab9bba91a726f6 (patch) | |
tree | 4f878df90b90187c39b96290c7868e626cecf997 /drivers/clk | |
parent | e02940fc9ed323ae512f3ded62abaf9d6a3d3265 (diff) | |
download | linux-4fa043806a2cdbf86503068276ab9bba91a726f6.tar.bz2 |
clk: mediatek: Add fixed clocks support for Mediatek SoC.
This patch adds fixed clocks support by using CCF fixed-rate
clock implementation.
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/mediatek/clk-mtk.c | 23 | ||||
-rw-r--r-- | drivers/clk/mediatek/clk-mtk.h | 17 |
2 files changed, 40 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c index 268b6ff23aec..cf08db6c130c 100644 --- a/drivers/clk/mediatek/clk-mtk.c +++ b/drivers/clk/mediatek/clk-mtk.c @@ -49,6 +49,29 @@ err_out: return NULL; } +void __init 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 __init 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 9f1982059cff..24b73ff84e06 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -26,6 +26,23 @@ struct clk; #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; |