From 26bd0a57755df51a34037d8151a443cec3688b80 Mon Sep 17 00:00:00 2001 From: Gabriel Fernandez Date: Mon, 29 Aug 2016 14:26:57 +0200 Subject: drivers: clk: st: Add clock propagation for audio clocks This patch allows fine tuning of the quads FS for audio clocks accuracy. Signed-off-by: Olivier Bideau Signed-off-by: Gabriel Fernandez Acked-by: Peter Griffin Signed-off-by: Stephen Boyd --- drivers/clk/st/clk-flexgen.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'drivers/clk') diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c index 546bd79c8e3a..7ed05f0d629a 100644 --- a/drivers/clk/st/clk-flexgen.c +++ b/drivers/clk/st/clk-flexgen.c @@ -15,6 +15,10 @@ #include #include +struct clkgen_data { + unsigned long flags; +}; + struct flexgen { struct clk_hw hw; @@ -259,6 +263,18 @@ static const char ** __init flexgen_get_parents(struct device_node *np, return parents; } +static const struct clkgen_data clkgen_audio = { + .flags = CLK_SET_RATE_PARENT, +}; + +static const struct of_device_id flexgen_of_match[] = { + { + .compatible = "st,flexgen-audio", + .data = &clkgen_audio, + }, + {} +}; + static void __init st_of_flexgen_setup(struct device_node *np) { struct device_node *pnode; @@ -267,6 +283,9 @@ static void __init st_of_flexgen_setup(struct device_node *np) const char **parents; int num_parents, i; spinlock_t *rlock = NULL; + const struct of_device_id *match; + struct clkgen_data *data = NULL; + unsigned long flex_flags = 0; int ret; pnode = of_get_parent(np); @@ -281,6 +300,12 @@ static void __init st_of_flexgen_setup(struct device_node *np) if (!parents) return; + match = of_match_node(flexgen_of_match, np); + if (match) { + data = (struct clkgen_data *)match->data; + flex_flags = data->flags; + } + clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL); if (!clk_data) goto err; @@ -307,7 +332,6 @@ static void __init st_of_flexgen_setup(struct device_node *np) for (i = 0; i < clk_data->clk_num; i++) { struct clk *clk; const char *clk_name; - unsigned long flex_flags = 0; if (of_property_read_string_index(np, "clock-output-names", i, &clk_name)) { -- cgit v1.2.3