diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mx27/generic.c')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx27/generic.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c index 34c20e1..65c4813 100644 --- a/arch/arm/cpu/arm926ejs/mx27/generic.c +++ b/arch/arm/cpu/arm926ejs/mx27/generic.c @@ -23,6 +23,7 @@ #include <netdev.h> #include <asm/io.h> #include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> #ifdef CONFIG_MXC_MMC #include <asm/arch/mxcmmc.h> #endif @@ -34,7 +35,7 @@ * f = 2 * f_ref * -------------------- * pd + 1 */ -unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) +static unsigned int imx_decode_pll(unsigned int pll, unsigned int f_ref) { unsigned int mfi = (pll >> 10) & 0xf; unsigned int mfn = pll & 0x3ff; @@ -64,7 +65,7 @@ static ulong clk_in_26m(void) } } -ulong imx_get_mpllclk(void) +static ulong imx_get_mpllclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -78,7 +79,7 @@ ulong imx_get_mpllclk(void) return imx_decode_pll(readl(&pll->mpctl0), fref); } -ulong imx_get_armclk(void) +static ulong imx_get_armclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -93,7 +94,7 @@ ulong imx_get_armclk(void) return lldiv(fref, div); } -ulong imx_get_ahbclk(void) +static ulong imx_get_ahbclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -105,7 +106,7 @@ ulong imx_get_ahbclk(void) return lldiv(fref * 2, 3 * div); } -ulong imx_get_spllclk(void) +static __attribute__((unused)) ulong imx_get_spllclk(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; ulong cscr = readl(&pll->cscr); @@ -124,34 +125,50 @@ static ulong imx_decode_perclk(ulong div) return lldiv((imx_get_mpllclk() * 2), (div * 3)); } -ulong imx_get_perclk1(void) +static ulong imx_get_perclk1(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; return imx_decode_perclk((readl(&pll->pcdr1) & 0x3f) + 1); } -ulong imx_get_perclk2(void) +static ulong imx_get_perclk2(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; return imx_decode_perclk(((readl(&pll->pcdr1) >> 8) & 0x3f) + 1); } -ulong imx_get_perclk3(void) +static __attribute__((unused)) ulong imx_get_perclk3(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; return imx_decode_perclk(((readl(&pll->pcdr1) >> 16) & 0x3f) + 1); } -ulong imx_get_perclk4(void) +static __attribute__((unused)) ulong imx_get_perclk4(void) { struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE; return imx_decode_perclk(((readl(&pll->pcdr1) >> 24) & 0x3f) + 1); } +unsigned int mxc_get_clock(enum mxc_clock clk) +{ + switch (clk) { + case MXC_ARM_CLK: + return imx_get_armclk(); + case MXC_UART_CLK: + return imx_get_perclk1(); + case MXC_FEC_CLK: + return imx_get_ahbclk(); + case MXC_ESDHC_CLK: + return imx_get_perclk2(); + } + return -1; +} + + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo (void) { |