diff options
Diffstat (limited to 'src/soc/rockchip/rk3399')
| -rw-r--r-- | src/soc/rockchip/rk3399/Kconfig | 2 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3399/clock.c | 20 |
2 files changed, 11 insertions, 11 deletions
diff --git a/src/soc/rockchip/rk3399/Kconfig b/src/soc/rockchip/rk3399/Kconfig index 1d2960be1f..440981bf7f 100644 --- a/src/soc/rockchip/rk3399/Kconfig +++ b/src/soc/rockchip/rk3399/Kconfig @@ -32,7 +32,7 @@ config RK3399_SPREAD_SPECTRUM_DDR default n help Select Spread Spectrum Modulator (SSMOD) is a fully-digital circuit - used to modulate the frequency of the Silicon Creations’ Fractional + used to modulate the frequency of the Silicon Creations' Fractional PLL in order to reduce EMI. endif diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c index 980adf5000..5422deb5cf 100644 --- a/src/soc/rockchip/rk3399/clock.c +++ b/src/soc/rockchip/rk3399/clock.c @@ -344,12 +344,12 @@ static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div) /* * Configure the DPLL spread spectrum feature on memory clock. * Configure sequence: - * 1. PLL been configured as frac mode, and DACPD should be set to 1’b0. + * 1. PLL been configured as frac mode, and DACPD should be set to 1'b0. * 2. Configure DOWNSPERAD, SPREAD, DIVVAL(option: configure xPLL_CON5 with * extern wave table). - * 3. set ssmod_disable_sscg = 1’b0, and set ssmod_bp = 1’b0. - * 4. Assert RESET = 1’b1 to SSMOD. - * 5. RESET = 1’b0 on SSMOD. + * 3. set ssmod_disable_sscg = 1'b0, and set ssmod_bp = 1'b0. + * 4. Assert RESET = 1'b1 to SSMOD. + * 5. RESET = 1'b0 on SSMOD. * 6. Adjust SPREAD/DIVVAL/DOWNSPREAD. */ static void rkclk_set_dpllssc(struct pll_div *dpll_cfg) @@ -385,13 +385,13 @@ static void rkclk_set_dpllssc(struct pll_div *dpll_cfg) * value of SPREAD. * SPREAD[4:0] Center Spread Down Spread * 0 0 0 - * 1 ±0.1% -0.10% - * 2 ±0.2% -0.20% - * 3 ±0.3% -0.30% - * 4 ±0.4% -0.40% - * 5 ±0.5% -0.50% + * 1 +/-0.1% -0.10% + * 2 +/-0.2% -0.20% + * 3 +/-0.3% -0.30% + * 4 +/-0.4% -0.40% + * 5 +/-0.5% -0.50% * ... - * 31 ±3.1% -3.10% + * 31 +/-3.1% -3.10% */ write32(&cru_ptr->dpll_con[4], RK_CLRSETBITS(PLL_SSMOD_DIVVAL_MASK << PLL_SSMOD_DIVVAL_SHIFT, |