[PATCH v2 7/9] clk: si5341: Add silabs,xaxb-ext-clk property
From: Robert Hancock <hidden>
Date: 2021-03-12 18:18:31
Also in:
linux-clk
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
Add a property to allow specifying that the device XA/XB pins are used for an external clock input rather than for a clock crystal. Signed-off-by: Robert Hancock <redacted> --- drivers/clk/clk-si5341.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/clk-si5341.c b/drivers/clk/clk-si5341.c
index ed790a35eb83..689f8c2b0b57 100644
--- a/drivers/clk/clk-si5341.c
+++ b/drivers/clk/clk-si5341.c@@ -80,6 +80,7 @@ struct clk_si5341 { u8 num_outputs; u8 num_synth; u16 chip_id; + bool xaxb_ext_clk; }; #define to_clk_si5341(_hw) container_of(_hw, struct clk_si5341, hw)
@@ -529,9 +530,11 @@ static int si5341_clk_reparent(struct clk_si5341 *data, u8 index) if (err < 0) return err; - /* Power up XTAL oscillator and buffer */ + /* Power up XTAL oscillator and buffer, select clock mode */ err = regmap_update_bits(data->regmap, SI5341_XAXB_CFG, - SI5341_XAXB_CFG_PDNB, SI5341_XAXB_CFG_PDNB); + SI5341_XAXB_CFG_PDNB | SI5341_XAXB_CFG_EXTCLK_EN, + SI5341_XAXB_CFG_PDNB | (data->xaxb_ext_clk ? + SI5341_XAXB_CFG_EXTCLK_EN : 0)); if (err < 0) return err; }
@@ -1539,6 +1542,8 @@ static int si5341_probe(struct i2c_client *client, initialization_required = !err; } + data->xaxb_ext_clk = of_property_read_bool(client->dev.of_node, + "silabs,xaxb-ext-clk"); if (initialization_required) { /* Populate the regmap cache in preparation for "cache only" */
--
2.27.0