diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/clock_manager.c | 96 |
1 files changed, 38 insertions, 58 deletions
diff --git a/arch/arm/cpu/armv7/socfpga/clock_manager.c b/arch/arm/cpu/armv7/socfpga/clock_manager.c index 7a6b3b1..ed2b419 100644 --- a/arch/arm/cpu/armv7/socfpga/clock_manager.c +++ b/arch/arm/cpu/armv7/socfpga/clock_manager.c @@ -361,7 +361,7 @@ void cm_basic_init(const cm_config_t *cfg) writel(~0, &clock_manager_base->sdr_pll.en); } -unsigned long cm_get_mpu_clk_hz(void) +static unsigned int cm_get_main_vco_clk_hz(void) { uint32_t reg, clock; @@ -371,6 +371,37 @@ unsigned long cm_get_mpu_clk_hz(void) (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1); clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1); + return clock; +} + +static unsigned int cm_get_per_vco_clk_hz(void) +{ + uint32_t reg, clock = 0; + + /* identify PER PLL clock source */ + reg = readl(&clock_manager_base->per_pll.vco); + reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg); + if (reg == CLKMGR_VCO_SSRC_EOSC1) + clock = CONFIG_HPS_CLK_OSC1_HZ; + else if (reg == CLKMGR_VCO_SSRC_EOSC2) + clock = CONFIG_HPS_CLK_OSC2_HZ; + else if (reg == CLKMGR_VCO_SSRC_F2S) + clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; + + /* get the PER VCO clock */ + reg = readl(&clock_manager_base->per_pll.vco); + clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1); + clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1); + + return clock; +} + +unsigned long cm_get_mpu_clk_hz(void) +{ + uint32_t reg, clock; + + clock = cm_get_main_vco_clk_hz(); + /* get the MPU clock */ reg = readl(&clock_manager_base->altera.mpuclk); clock /= (reg + 1); @@ -415,11 +446,7 @@ unsigned int cm_get_l4_sp_clk_hz(void) reg = CLKMGR_MAINPLLGRP_L4SRC_L4SP_GET(reg); if (reg == CLKMGR_L4_SP_CLK_SRC_MAINPLL) { - /* get the main VCO clock */ - reg = readl(&clock_manager_base->main_pll.vco); - clock = CONFIG_HPS_CLK_OSC1_HZ / - (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_main_vco_clk_hz(); /* get the clock prior L4 SP divider (main clk) */ reg = readl(&clock_manager_base->altera.mainclk); @@ -427,20 +454,7 @@ unsigned int cm_get_l4_sp_clk_hz(void) reg = readl(&clock_manager_base->main_pll.mainclk); clock /= (reg + 1); } else if (reg == CLKMGR_L4_SP_CLK_SRC_PERPLL) { - /* identify PER PLL clock source */ - reg = readl(&clock_manager_base->per_pll.vco); - reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg); - if (reg == CLKMGR_VCO_SSRC_EOSC1) - clock = CONFIG_HPS_CLK_OSC1_HZ; - else if (reg == CLKMGR_VCO_SSRC_EOSC2) - clock = CONFIG_HPS_CLK_OSC2_HZ; - else if (reg == CLKMGR_VCO_SSRC_F2S) - clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; - - /* get the PER VCO clock */ - reg = readl(&clock_manager_base->per_pll.vco); - clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_per_vco_clk_hz(); /* get the clock prior L4 SP divider (periph_base_clk) */ reg = readl(&clock_manager_base->per_pll.perbaseclk); @@ -466,30 +480,13 @@ unsigned int cm_get_mmc_controller_clk_hz(void) if (reg == CLKMGR_SDMMC_CLK_SRC_F2S) { clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; } else if (reg == CLKMGR_SDMMC_CLK_SRC_MAIN) { - /* get the main VCO clock */ - reg = readl(&clock_manager_base->main_pll.vco); - clock = CONFIG_HPS_CLK_OSC1_HZ / - (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_main_vco_clk_hz(); /* get the SDMMC clock */ reg = readl(&clock_manager_base->main_pll.mainnandsdmmcclk); clock /= (reg + 1); } else if (reg == CLKMGR_SDMMC_CLK_SRC_PER) { - /* identify PER PLL clock source */ - reg = readl(&clock_manager_base->per_pll.vco); - reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg); - if (reg == CLKMGR_VCO_SSRC_EOSC1) - clock = CONFIG_HPS_CLK_OSC1_HZ; - else if (reg == CLKMGR_VCO_SSRC_EOSC2) - clock = CONFIG_HPS_CLK_OSC2_HZ; - else if (reg == CLKMGR_VCO_SSRC_F2S) - clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; - - /* get the PER VCO clock */ - reg = readl(&clock_manager_base->per_pll.vco); - clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_per_vco_clk_hz(); /* get the SDMMC clock */ reg = readl(&clock_manager_base->per_pll.pernandsdmmcclk); @@ -512,30 +509,13 @@ unsigned int cm_get_qspi_controller_clk_hz(void) if (reg == CLKMGR_QSPI_CLK_SRC_F2S) { clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; } else if (reg == CLKMGR_QSPI_CLK_SRC_MAIN) { - /* get the main VCO clock */ - reg = readl(&clock_manager_base->main_pll.vco); - clock = CONFIG_HPS_CLK_OSC1_HZ / - (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_main_vco_clk_hz(); /* get the qspi clock */ reg = readl(&clock_manager_base->main_pll.mainqspiclk); clock /= (reg + 1); } else if (reg == CLKMGR_QSPI_CLK_SRC_PER) { - /* identify PER PLL clock source */ - reg = readl(&clock_manager_base->per_pll.vco); - reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg); - if (reg == CLKMGR_VCO_SSRC_EOSC1) - clock = CONFIG_HPS_CLK_OSC1_HZ; - else if (reg == CLKMGR_VCO_SSRC_EOSC2) - clock = CONFIG_HPS_CLK_OSC2_HZ; - else if (reg == CLKMGR_VCO_SSRC_F2S) - clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ; - - /* get the PER VCO clock */ - reg = readl(&clock_manager_base->per_pll.vco); - clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1); - clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1); + clock = cm_get_per_vco_clk_hz(); /* get the qspi clock */ reg = readl(&clock_manager_base->per_pll.perqspiclk); |