diff options
Diffstat (limited to 'arch/arm/mach-imx/speed-imx31.c')
| -rw-r--r-- | arch/arm/mach-imx/speed-imx31.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/speed-imx31.c b/arch/arm/mach-imx/speed-imx31.c index 630c648dbf..70b1330d96 100644 --- a/arch/arm/mach-imx/speed-imx31.c +++ b/arch/arm/mach-imx/speed-imx31.c @@ -41,6 +41,18 @@ ulong imx_get_mcu_main_clk(void) return imx_get_mpl_dpdgck_clk(); } +/** + * Calculate the current pixel clock speed (aka HSP or IPU) + * @return 0 on failure or current frequency in Hz + */ +ulong imx_get_lcdclk(void) +{ + ulong hsp_podf = (readl(IMX_CCM_BASE + CCM_PDR0) >> 11) & 0x03; + ulong base_clk = imx_get_mcu_main_clk(); + + return base_clk / (hsp_podf + 1); +} + ulong imx_get_perclk1(void) { u32 freq = imx_get_mcu_main_clk(); |