diff options
| author |   Mike Looijmans <mike.looijmans@topic.nl> | 2023-08-02 08:41:00 +0200 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2023-08-23 15:47:35 -0700 |
| commit | 6aa8dc690d99f7aa7fc41f5606c7ee9ad481ad0b (patch) | |
| tree | b09f976b692b8dc1f7294df2a215f1b49c04a74c | |
| parent | clk: lmk04832: Don't disable vco clock on probe fail (diff) | |
| download | wireguard-linux-6aa8dc690d99f7aa7fc41f5606c7ee9ad481ad0b.tar.xz wireguard-linux-6aa8dc690d99f7aa7fc41f5606c7ee9ad481ad0b.zip | |
clk: lmk04832: Support using PLL1_LD as SPI readback pin
The PLL1_PD pin (a.k.a. STATUS_LD1) can be used as SPI readback pin. Make
this possible.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Link: https://lore.kernel.org/r/20230802064100.15793-3-mike.looijmans@topic.nl
Reviewed-by: Liam Beguin <liambeguin@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
| -rw-r--r-- | drivers/clk/clk-lmk04832.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/clk/clk-lmk04832.c b/drivers/clk/clk-lmk04832.c index dd1f0c59ee71..99b271c1278a 100644 --- a/drivers/clk/clk-lmk04832.c +++ b/drivers/clk/clk-lmk04832.c @@ -134,6 +134,11 @@ /* 0x14b - 0x152 Holdover */ /* 0x153 - 0x15f PLL1 Configuration */ +#define LMK04832_REG_PLL1_LD 0x15f +#define LMK04832_BIT_PLL1_LD_MUX GENMASK(7, 3) +#define LMK04832_VAL_PLL1_LD_MUX_SPI_RDBK 0x07 +#define LMK04832_BIT_PLL1_LD_TYPE GENMASK(2, 0) +#define LMK04832_VAL_PLL1_LD_TYPE_OUT_PP 0x03 /* 0x160 - 0x16e PLL2 Configuration */ #define LMK04832_REG_PLL2_R_MSB 0x160 @@ -206,6 +211,7 @@ enum lmk04832_rdbk_type { RDBK_CLKIN_SEL0, RDBK_CLKIN_SEL1, RDBK_RESET, + RDBK_PLL1_LD, }; struct lmk_dclk { @@ -1346,6 +1352,10 @@ static int lmk04832_set_spi_rdbk(const struct lmk04832 *lmk, const int rdbk_pin) { int reg; int ret; + int val = FIELD_PREP(LMK04832_BIT_CLKIN_SEL_MUX, + LMK04832_VAL_CLKIN_SEL_MUX_SPI_RDBK) | + FIELD_PREP(LMK04832_BIT_CLKIN_SEL_TYPE, + LMK04832_VAL_CLKIN_SEL_TYPE_OUT); dev_info(lmk->dev, "setting up 4-wire mode\n"); ret = regmap_write(lmk->regmap, LMK04832_REG_RST3W, @@ -1363,15 +1373,18 @@ static int lmk04832_set_spi_rdbk(const struct lmk04832 *lmk, const int rdbk_pin) case RDBK_RESET: reg = LMK04832_REG_CLKIN_RST; break; + case RDBK_PLL1_LD: + reg = LMK04832_REG_PLL1_LD; + val = FIELD_PREP(LMK04832_BIT_PLL1_LD_MUX, + LMK04832_VAL_PLL1_LD_MUX_SPI_RDBK) | + FIELD_PREP(LMK04832_BIT_PLL1_LD_TYPE, + LMK04832_VAL_PLL1_LD_TYPE_OUT_PP); + break; default: return -EINVAL; } - return regmap_write(lmk->regmap, reg, - FIELD_PREP(LMK04832_BIT_CLKIN_SEL_MUX, - LMK04832_VAL_CLKIN_SEL_MUX_SPI_RDBK) | - FIELD_PREP(LMK04832_BIT_CLKIN_SEL_TYPE, - LMK04832_VAL_CLKIN_SEL_TYPE_OUT)); + return regmap_write(lmk->regmap, reg, val); } static int lmk04832_probe(struct spi_device *spi) |