diff options
Diffstat (limited to 'src/soc/rockchip/rk3399/clock.c')
| -rw-r--r-- | src/soc/rockchip/rk3399/clock.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c index d706c9329f..1050552c99 100644 --- a/src/soc/rockchip/rk3399/clock.c +++ b/src/soc/rockchip/rk3399/clock.c @@ -155,6 +155,10 @@ enum { HCLK_PERILP1_DIV_CON_MASK = 0x1f, HCLK_PERILP1_DIV_CON_SHIFT = 0, + /* CLKSEL_CON26 */ + CLK_SARADC_DIV_CON_MASK = 0xff, + CLK_SARADC_DIV_CON_SHIFT = 8, + /* CLKSEL_CON58 */ CLK_SPI_PLL_SEL_MASK = 1, CLK_SPI_PLL_SEL_CPLL = 0, @@ -575,3 +579,17 @@ uint32_t rkclk_i2c_clock_for_bus(unsigned bus) return freq; } + +void rkclk_configure_saradc(unsigned int hz) +{ + int src_clk_div; + + /* saradc src clk from 24MHz */ + src_clk_div = 24 * MHz / hz; + assert((src_clk_div - 1 < 255) && (src_clk_div * hz == 24 * MHz)); + + write32(&cru_ptr->clksel_con[26], + RK_CLRSETBITS(CLK_SARADC_DIV_CON_MASK << + CLK_SARADC_DIV_CON_SHIFT, + (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT)); +} |