diff options
| author | Gabriel Fernandez <gabriel.fernandez@foss.st.com> | 2022-05-16 09:05:56 +0200 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2022-05-21 06:07:49 +0200 |
| commit | ffa2d04d859e99d69d0c89d3dc50067022544354 (patch) | |
| tree | f2a746bd38a4d4375154c6bbbca8f7d77bb53be9 /drivers/clk/stm32/clk-stm32mp13.c | |
| parent | clk: stm32mp13: add all STM32MP13 kernel clocks (diff) | |
| download | linux-ffa2d04d859e99d69d0c89d3dc50067022544354.tar.xz linux-ffa2d04d859e99d69d0c89d3dc50067022544354.zip | |
clk: stm32mp13: add multi mux function
Some RCC muxes can manages two output clocks with same register.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
Link: https://lore.kernel.org/r/20220516070600.7692-11-gabriel.fernandez@foss.st.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/stm32/clk-stm32mp13.c')
| -rw-r--r-- | drivers/clk/stm32/clk-stm32mp13.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/clk/stm32/clk-stm32mp13.c b/drivers/clk/stm32/clk-stm32mp13.c index 9edd32018f8f..08e3fe05d6d0 100644 --- a/drivers/clk/stm32/clk-stm32mp13.c +++ b/drivers/clk/stm32/clk-stm32mp13.c @@ -1469,6 +1469,35 @@ static int stm32mp13_clock_is_provided_by_secure(void __iomem *base, return 0; } +struct multi_mux { + struct clk_hw *hw1; + struct clk_hw *hw2; +}; + +static struct multi_mux *stm32_mp13_multi_mux[MUX_NB] = { + [MUX_SPI23] = &(struct multi_mux){ &spi2_k.hw, &spi3_k.hw }, + [MUX_I2C12] = &(struct multi_mux){ &i2c1_k.hw, &i2c2_k.hw }, + [MUX_LPTIM45] = &(struct multi_mux){ &lptim4_k.hw, &lptim5_k.hw }, + [MUX_UART35] = &(struct multi_mux){ &usart3_k.hw, &uart5_k.hw }, + [MUX_UART78] = &(struct multi_mux){ &uart7_k.hw, &uart8_k.hw }, + [MUX_SAI1] = &(struct multi_mux){ &sai1_k.hw, &adfsdm_k.hw }, +}; + +static struct clk_hw *stm32mp13_is_multi_mux(struct clk_hw *hw) +{ + struct clk_stm32_composite *composite = to_clk_stm32_composite(hw); + struct multi_mux *mmux = stm32_mp13_multi_mux[composite->mux_id]; + + if (mmux) { + if (!(mmux->hw1 == hw)) + return mmux->hw1; + else + return mmux->hw2; + } + + return NULL; +} + static u16 stm32mp13_cpt_gate[GATE_NB]; static struct clk_stm32_clock_data stm32mp13_clock_data = { @@ -1476,6 +1505,7 @@ static struct clk_stm32_clock_data stm32mp13_clock_data = { .gates = stm32mp13_gates, .muxes = stm32mp13_muxes, .dividers = stm32mp13_dividers, + .is_multi_mux = stm32mp13_is_multi_mux, }; static const struct stm32_rcc_match_data stm32mp13_data = { |