diff options
Diffstat (limited to 'drivers/st/clk/stm32mp1_clk.c')
| -rw-r--r-- | drivers/st/clk/stm32mp1_clk.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/drivers/st/clk/stm32mp1_clk.c b/drivers/st/clk/stm32mp1_clk.c index 6ada96a52..3ebc376cd 100644 --- a/drivers/st/clk/stm32mp1_clk.c +++ b/drivers/st/clk/stm32mp1_clk.c @@ -56,6 +56,7 @@ enum stm32mp1_parent_id { _HSI_KER = NB_OSC, _HSE_KER, _HSE_KER_DIV2, + _HSE_RTC, _CSI_KER, _PLL1_P, _PLL1_Q, @@ -107,7 +108,7 @@ enum stm32mp1_parent_sel { _USBPHY_SEL, _USBO_SEL, _MPU_SEL, - _PER_SEL, + _CKPER_SEL, _RTC_SEL, _PARENT_SEL_NB, _UNKNOWN_SEL = 0xff, @@ -125,6 +126,7 @@ static const uint8_t parent_id_clock_id[_PARENT_NB] = { [_HSI_KER] = CK_HSI, [_HSE_KER] = CK_HSE, [_HSE_KER_DIV2] = CK_HSE_DIV2, + [_HSE_RTC] = _UNKNOWN_ID, [_CSI_KER] = CK_CSI, [_PLL1_P] = PLL1_P, [_PLL1_Q] = PLL1_Q, @@ -465,12 +467,12 @@ static const uint8_t fmc_parents[] = { _ACLK, _PLL3_R, _PLL4_P, _CK_PER }; -static const uint8_t ass_parents[] = { - _HSI, _HSE, _PLL2 +static const uint8_t axiss_parents[] = { + _HSI, _HSE, _PLL2_P }; -static const uint8_t mss_parents[] = { - _HSI, _HSE, _CSI, _PLL3 +static const uint8_t mcuss_parents[] = { + _HSI, _HSE, _CSI, _PLL3_P }; static const uint8_t usbphy_parents[] = { @@ -490,7 +492,7 @@ static const uint8_t per_parents[] = { }; static const uint8_t rtc_parents[] = { - _UNKNOWN_ID, _LSE, _LSI, _HSE + _UNKNOWN_ID, _LSE, _LSI, _HSE_RTC }; static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = { @@ -502,7 +504,7 @@ static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = { _CLK_PARENT_SEL(UART1, RCC_UART1CKSELR, usart1_parents), _CLK_PARENT_SEL(RNG1, RCC_RNG1CKSELR, rng1_parents), _CLK_PARENT_SEL(MPU, RCC_MPCKSELR, mpu_parents), - _CLK_PARENT_SEL(PER, RCC_CPERCKSELR, per_parents), + _CLK_PARENT_SEL(CKPER, RCC_CPERCKSELR, per_parents), _CLK_PARENT_SEL(RTC, RCC_BDCR, rtc_parents), _CLK_PARENT_SEL(UART6, RCC_UART6CKSELR, uart6_parents), _CLK_PARENT_SEL(UART24, RCC_UART24CKSELR, uart234578_parents), @@ -512,8 +514,8 @@ static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = { _CLK_PARENT_SEL(SDMMC3, RCC_SDMMC3CKSELR, sdmmc3_parents), _CLK_PARENT_SEL(QSPI, RCC_QSPICKSELR, qspi_parents), _CLK_PARENT_SEL(FMC, RCC_FMCCKSELR, fmc_parents), - _CLK_PARENT_SEL(AXIS, RCC_ASSCKSELR, ass_parents), - _CLK_PARENT_SEL(MCUS, RCC_MSSCKSELR, mss_parents), + _CLK_PARENT_SEL(AXIS, RCC_ASSCKSELR, axiss_parents), + _CLK_PARENT_SEL(MCUS, RCC_MSSCKSELR, mcuss_parents), _CLK_PARENT_SEL(USBPHY, RCC_USBCKSELR, usbphy_parents), _CLK_PARENT_SEL(USBO, RCC_USBCKSELR, usbo_parents), }; @@ -587,6 +589,7 @@ static const char * const stm32mp1_clk_parent_name[_PARENT_NB] __unused = { [_HSI_KER] = "HSI_KER", [_HSE_KER] = "HSE_KER", [_HSE_KER_DIV2] = "HSE_KER_DIV2", + [_HSE_RTC] = "HSE_RTC", [_CSI_KER] = "CSI_KER", [_PLL1_P] = "PLL1_P", [_PLL1_Q] = "PLL1_Q", @@ -847,9 +850,7 @@ static unsigned long get_clock_rate(int p) reg = mmio_read_32(rcc_base + RCC_MPCKDIVR); clkdiv = reg & RCC_MPUDIV_MASK; - if (clkdiv != 0U) { - clock /= stm32mp1_mpu_div[clkdiv]; - } + clock >>= stm32mp1_mpu_div[clkdiv]; break; default: break; @@ -969,6 +970,10 @@ static unsigned long get_clock_rate(int p) case _HSE_KER_DIV2: clock = stm32mp1_clk_get_fixed(_HSE) >> 1; break; + case _HSE_RTC: + clock = stm32mp1_clk_get_fixed(_HSE); + clock /= (mmio_read_32(rcc_base + RCC_RTCDIVR) & RCC_DIVR_DIV_MASK) + 1U; + break; case _LSI: clock = stm32mp1_clk_get_fixed(_LSI); break; @@ -1086,6 +1091,10 @@ static bool clock_is_always_on(unsigned long id) case PLL3_P: case PLL3_Q: case PLL3_R: + case CK_AXI: + case CK_MPU: + case CK_MCU: + case RTC: return true; default: return false; @@ -1652,7 +1661,7 @@ static void stm32mp1_set_rtcsrc(unsigned int clksrc, bool lse_css) (clksrc != (uint32_t)CLK_RTC_DISABLED)) { mmio_clrsetbits_32(address, RCC_BDCR_RTCSRC_MASK, - clksrc << RCC_BDCR_RTCSRC_SHIFT); + (clksrc & RCC_SELR_SRC_MASK) << RCC_BDCR_RTCSRC_SHIFT); mmio_setbits_32(address, RCC_BDCR_RTCCKEN); } @@ -2152,6 +2161,7 @@ static void secure_parent_clocks(unsigned long parent_id) case _HSE: case _HSE_KER: case _HSE_KER_DIV2: + case _HSE_RTC: case _LSE: break; @@ -2210,6 +2220,7 @@ static void sync_earlyboot_clocks_state(void) DDRC2, DDRC2LP, DDRCAPB, DDRPHYCAPB, DDRPHYCAPBLP, DDRPHYC, DDRPHYCLP, + RTCAPB, TZC1, TZC2, TZPC, STGEN_K, @@ -2218,10 +2229,6 @@ static void sync_earlyboot_clocks_state(void) for (idx = 0U; idx < ARRAY_SIZE(secure_enable); idx++) { stm32mp_clk_enable(secure_enable[idx]); } - - if (!stm32mp_is_single_core()) { - stm32mp1_clk_enable_secure(RTCAPB); - } } int stm32mp1_clk_probe(void) |