[PATCH v4 5/9] clk: cs2000-cp: Make aux output function controllable
From: Daniel Mack <daniel@zonque.org>
Date: 2021-08-27 12:02:34
Also in:
linux-clk
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
The aux output pin can be configured to output either of the two clock inputs, the generated clock or the pll lock status. Allow access to this feature through a new optional device-tree property. Signed-off-by: Daniel Mack <daniel@zonque.org> --- drivers/clk/clk-cs2000-cp.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/clk/clk-cs2000-cp.c b/drivers/clk/clk-cs2000-cp.c
index 92bc4aca0f95..db7290621cef 100644
--- a/drivers/clk/clk-cs2000-cp.c
+++ b/drivers/clk/clk-cs2000-cp.c@@ -39,6 +39,8 @@ /* DEVICE_CFG1 */ #define RSEL(x) (((x) & 0x3) << 3) #define RSEL_MASK RSEL(0x3) +#define AUXOUTSRC(x) (((x) & 0x3) << 1) +#define AUXOUTSRC_MASK AUXOUTSRC(0x3) #define ENDEV1 (0x1) /* DEVICE_CFG2 */
@@ -421,12 +423,19 @@ static int cs2000_clk_register(struct cs2000_priv *priv) struct clk_init_data init; const char *name = np->name; static const char *parent_names[CLK_MAX]; + u32 aux_out = 0; int ch = 0; /* it uses ch0 only at this point */ int rate; int ret; of_property_read_string(np, "clock-output-names", &name); + of_property_read_u32(np, "cirrus,aux-output-source", &aux_out); + ret = cs2000_bset(priv, DEVICE_CFG1, + AUXOUTSRC_MASK, AUXOUTSRC(aux_out)); + if (ret < 0) + return ret; + /* * set default rate as 1/1. * otherwise .set_rate which setup ratio
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2.31.1