diff options
| author | Gabriel Fernandez <gabriel.fernandez@st.com> | 2018-03-08 19:54:04 +0300 |
|---|---|---|
| committer | Michael Turquette <mturquette@baylibre.com> | 2018-03-12 01:40:34 +0300 |
| commit | 44cd455a8edb4026ae2c1c6fb6895523712c4896 (patch) | |
| tree | 4bb24b4d02b1c24ab0acb0412a3bd5fb6779b509 /drivers | |
| parent | 2c87c9d33117446dab774a7e1b23806802f95c98 (diff) | |
| download | linux-44cd455a8edb4026ae2c1c6fb6895523712c4896.tar.xz | |
clk: stm32mp1: add MCO clocks
Two micro-controller clock output (MCO) pins are available:
MCO1 and MCO2.
For each output, it is possible to select a clock source.
The selected clock can be divided thanks to configurable
prescaler.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/clk-stm32mp1.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/clk/clk-stm32mp1.c b/drivers/clk/clk-stm32mp1.c index 51e3e76b8fa5..b3a6ec4d9e9e 100644 --- a/drivers/clk/clk-stm32mp1.c +++ b/drivers/clk/clk-stm32mp1.c @@ -252,6 +252,14 @@ static const char * const rtc_src[] = { "off", "ck_lse", "ck_lsi", "ck_hse_rtc" }; +static const char * const mco1_src[] = { + "ck_hsi", "ck_hse", "ck_csi", "ck_lsi", "ck_lse" +}; + +static const char * const mco2_src[] = { + "ck_mpu", "ck_axi", "ck_mcu", "pll4_p", "ck_hse", "ck_hsi" +}; + static const struct clk_div_table axi_div_table[] = { { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, { 4, 4 }, { 5, 4 }, { 6, 4 }, { 7, 4 }, @@ -1960,6 +1968,18 @@ static const struct clock_config stm32mp1_clock_cfg[] = { _MUX(RCC_BDCR, 16, 2, 0), _NO_DIV), + /* MCO clocks */ + COMPOSITE(CK_MCO1, "ck_mco1", mco1_src, CLK_OPS_PARENT_ENABLE | + CLK_SET_RATE_NO_REPARENT, + _GATE(RCC_MCO1CFGR, 12, 0), + _MUX(RCC_MCO1CFGR, 0, 3, 0), + _DIV(RCC_MCO1CFGR, 4, 4, 0, NULL)), + + COMPOSITE(CK_MCO2, "ck_mco2", mco2_src, CLK_OPS_PARENT_ENABLE | + CLK_SET_RATE_NO_REPARENT, + _GATE(RCC_MCO2CFGR, 12, 0), + _MUX(RCC_MCO2CFGR, 0, 3, 0), + _DIV(RCC_MCO2CFGR, 4, 4, 0, NULL)), }; struct stm32_clock_match_data { |