diff options
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 60 |
1 files changed, 57 insertions, 3 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index 1ef307a..5f0037a 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -18,6 +18,8 @@ enum pll_clocks { PLL_BUS, /* System Bus PLL*/ PLL_USBOTG, /* OTG USB PLL */ PLL_ENET, /* ENET PLL */ + PLL_AUDIO, /* AUDIO PLL */ + PLL_VIDEO, /* AUDIO PLL */ }; struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; @@ -222,7 +224,7 @@ int enable_spi_clk(unsigned char enable, unsigned spi_num) } static u32 decode_pll(enum pll_clocks pll, u32 infreq) { - u32 div; + u32 div, test_div, pll_num, pll_denom; switch (pll) { case PLL_SYS: @@ -245,6 +247,44 @@ static u32 decode_pll(enum pll_clocks pll, u32 infreq) div &= BM_ANADIG_PLL_ENET_DIV_SELECT; return 25000000 * (div + (div >> 1) + 1); + case PLL_AUDIO: + div = __raw_readl(&imx_ccm->analog_pll_audio); + if (!(div & BM_ANADIG_PLL_AUDIO_ENABLE)) + return 0; + /* BM_ANADIG_PLL_AUDIO_BYPASS_CLK_SRC is ignored */ + if (div & BM_ANADIG_PLL_AUDIO_BYPASS) + return MXC_HCLK; + pll_num = __raw_readl(&imx_ccm->analog_pll_audio_num); + pll_denom = __raw_readl(&imx_ccm->analog_pll_audio_denom); + test_div = (div & BM_ANADIG_PLL_AUDIO_TEST_DIV_SELECT) >> + BP_ANADIG_PLL_AUDIO_TEST_DIV_SELECT; + div &= BM_ANADIG_PLL_AUDIO_DIV_SELECT; + if (test_div == 3) { + debug("Error test_div\n"); + return 0; + } + test_div = 1 << (2 - test_div); + + return infreq * (div + pll_num / pll_denom) / test_div; + case PLL_VIDEO: + div = __raw_readl(&imx_ccm->analog_pll_video); + if (!(div & BM_ANADIG_PLL_VIDEO_ENABLE)) + return 0; + /* BM_ANADIG_PLL_AUDIO_BYPASS_CLK_SRC is ignored */ + if (div & BM_ANADIG_PLL_VIDEO_BYPASS) + return MXC_HCLK; + pll_num = __raw_readl(&imx_ccm->analog_pll_video_num); + pll_denom = __raw_readl(&imx_ccm->analog_pll_video_denom); + test_div = (div & BM_ANADIG_PLL_VIDEO_TEST_DIV_SELECT) >> + BP_ANADIG_PLL_VIDEO_TEST_DIV_SELECT; + div &= BM_ANADIG_PLL_VIDEO_DIV_SELECT; + if (test_div == 3) { + debug("Error test_div\n"); + return 0; + } + test_div = 1 << (2 - test_div); + + return infreq * (div + pll_num / pll_denom) / test_div; default: return 0; } @@ -454,7 +494,7 @@ static u32 get_mmdc_ch0_clk(void) { u32 cbcmr = __raw_readl(&imx_ccm->cbcmr); u32 cbcdr = __raw_readl(&imx_ccm->cbcdr); - u32 freq, mmdc_podf, per2_clk2_podf; + u32 freq, mmdc_podf, per2_clk2_podf, misc2_audio_podf; mmdc_podf = (cbcdr & MXC_CCM_CBCDR_MMDC_CH1_PODF_MASK) >> MXC_CCM_CBCDR_MMDC_CH1_PODF_OFFSET; @@ -480,7 +520,21 @@ static u32 get_mmdc_ch0_clk(void) break; case 3: /* static / 2 divider */ - freq = mxc_get_pll_pfd(PLL_BUS, 2) / 2; + misc2_audio_podf = ((__raw_readl(&imx_ccm->ana_misc2) >> 22) & 2) | + ((__raw_readl(&imx_ccm->ana_misc2) >> 15) & 1); + switch (misc2_audio_podf) { + case 0: + case 2: + misc2_audio_podf = 1; + break; + case 1: + misc2_audio_podf = 2; + break; + case 3: + misc2_audio_podf = 4; + break; + } + freq = decode_pll(PLL_AUDIO, MXC_HCLK) / misc2_audio_podf; break; } } |