diff options
| author | Robert Hancock <robert.hancock@calian.com> | 2021-03-25 13:26:41 -0600 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2021-06-27 19:58:14 -0700 |
| commit | ab89a3439ffa61913a625c34758a46c8ca0c0713 (patch) | |
| tree | 24ca602e1ca3cef3a8013e85b375b5e3a69a28e9 /drivers/clk/clk-si5341.c | |
| parent | b7bbf6ec4940d1a69811ec354edeeb9751fa8e85 (diff) | |
| download | lwn-ab89a3439ffa61913a625c34758a46c8ca0c0713.tar.gz lwn-ab89a3439ffa61913a625c34758a46c8ca0c0713.zip | |
clk: si5341: Add silabs,xaxb-ext-clk property
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 <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20210325192643.2190069-8-robert.hancock@calian.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/clk-si5341.c')
| -rw-r--r-- | drivers/clk/clk-si5341.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/clk/clk-si5341.c b/drivers/clk/clk-si5341.c index 28ac7085f362..c5ab4a5ae6a5 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" */ |