diff options
Diffstat (limited to 'src/soc/rockchip/rk3399/clock.c')
| -rw-r--r-- | src/soc/rockchip/rk3399/clock.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c index c2a1691632..8a2b3517f6 100644 --- a/src/soc/rockchip/rk3399/clock.c +++ b/src/soc/rockchip/rk3399/clock.c @@ -86,6 +86,14 @@ enum { PMU_PCLK_DIV_CON_MASK = 0x1f, PMU_PCLK_DIV_CON_SHIFT = 0, + /* PMUCRU_CLKSEL_CON1 */ + SPI3_PLL_SEL_MASK = 1, + SPI3_PLL_SEL_SHIFT = 7, + SPI3_PLL_SEL_24M = 0, + SPI3_PLL_SEL_PPLL = 1, + SPI3_DIV_CON_MASK = 0x7f, + SPI3_DIV_CON_SHIFT = 0x0, + /* CLKSEL_CON0 */ ACLKM_CORE_L_DIV_CON_MASK = 0x1f, ACLKM_CORE_L_DIV_CON_SHIFT = 8, @@ -138,6 +146,26 @@ enum { HCLK_PERILP1_DIV_CON_MASK = 0x1f, HCLK_PERILP1_DIV_CON_SHIFT = 0, + /* CLKSEL_CON58 */ + CLK_SPI_PLL_SEL_MASK = 1, + CLK_SPI_PLL_SEL_CPLL = 0, + CLK_SPI_PLL_SEL_GPLL = 1, + CLK_SPI_PLL_DIV_CON_MASK = 0x7f, + CLK_SPI5_PLL_DIV_CON_SHIFT = 8, + CLK_SPI5_PLL_SEL_SHIFT = 15, + + /* CLKSEL_CON59 */ + CLK_SPI1_PLL_SEL_SHIFT = 15, + CLK_SPI1_PLL_DIV_CON_SHIFT = 8, + CLK_SPI0_PLL_SEL_SHIFT = 7, + CLK_SPI0_PLL_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON60 */ + CLK_SPI4_PLL_SEL_SHIFT = 15, + CLK_SPI4_PLL_DIV_CON_SHIFT = 8, + CLK_SPI2_PLL_SEL_SHIFT = 7, + CLK_SPI2_PLL_DIV_CON_SHIFT = 0, + /* CRU_SOFTRST_CON4 */ RESETN_DDR0_REQ_MASK = 1, RESETN_DDR0_REQ_SHIFT = 8, @@ -391,6 +419,55 @@ void rkclk_configure_ddr(unsigned int hz) rkclk_set_pll(&cru_ptr->dpll_con[0], &dpll_cfg); } +#define SPI_CLK_REG_VALUE(bus, clk_div) \ + RK_CLRSETBITS(CLK_SPI_PLL_SEL_MASK << \ + CLK_SPI ##bus## _PLL_SEL_SHIFT | \ + CLK_SPI_PLL_DIV_CON_MASK << \ + CLK_SPI ##bus## _PLL_DIV_CON_SHIFT, \ + CLK_SPI_PLL_SEL_GPLL << \ + CLK_SPI ##bus## _PLL_SEL_SHIFT | \ + (clk_div - 1) << \ + CLK_SPI ##bus## _PLL_DIV_CON_SHIFT) + void rkclk_configure_spi(unsigned int bus, unsigned int hz) { + int src_clk_div; + int pll; + + /* spi3 src clock from ppll, while spi0,1,2,4,5 src clock from gpll */ + pll = (bus == 3) ? PPLL_HZ : GPLL_HZ; + src_clk_div = pll / hz; + assert((src_clk_div - 1 < 127) && (src_clk_div * hz == pll)); + + switch (bus) { + case 0: + write32(&cru_ptr->clksel_con[59], + SPI_CLK_REG_VALUE(0, src_clk_div)); + break; + case 1: + write32(&cru_ptr->clksel_con[59], + SPI_CLK_REG_VALUE(1, src_clk_div)); + break; + case 2: + write32(&cru_ptr->clksel_con[60], + SPI_CLK_REG_VALUE(2, src_clk_div)); + break; + case 3: + write32(&pmucru_ptr->pmucru_clksel[1], + RK_CLRSETBITS(SPI3_PLL_SEL_MASK << SPI3_PLL_SEL_SHIFT | + SPI3_DIV_CON_MASK << SPI3_DIV_CON_SHIFT, + SPI3_PLL_SEL_PPLL << SPI3_PLL_SEL_SHIFT | + (src_clk_div - 1) << SPI3_DIV_CON_SHIFT)); + break; + case 4: + write32(&cru_ptr->clksel_con[60], + SPI_CLK_REG_VALUE(4, src_clk_div)); + break; + case 5: + write32(&cru_ptr->clksel_con[58], + SPI_CLK_REG_VALUE(5, src_clk_div)); + break; + default: + printk(BIOS_ERR, "do not support this spi bus\n"); + } } |