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author | vijay rai <vijay.rai@freescale.com> | 2014-04-15 11:34:12 +0530 |
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committer | York Sun <yorksun@freescale.com> | 2014-04-22 17:58:52 -0700 |
commit | 0c12a1592c49c4fccea1df3eac9bf769aa1bd503 (patch) | |
tree | c598d47adacfb706974232736d5ccf68c36fc789 /arch/powerpc/include/asm/immap_85xx.h | |
parent | b0615f0bd22abc575824a0e20d1192913b77e282 (diff) | |
download | u-boot-imx-0c12a1592c49c4fccea1df3eac9bf769aa1bd503.zip u-boot-imx-0c12a1592c49c4fccea1df3eac9bf769aa1bd503.tar.gz u-boot-imx-0c12a1592c49c4fccea1df3eac9bf769aa1bd503.tar.bz2 |
powerpc/85xx: Enhance get_sys_info() to check clocking mode
T1040 and it's variants provide "Single Oscillator Source" Reference Clock Mode.
In this mode, single onboard oscillator(DIFF_SYSCLK) can provide the reference clock
(100MHz) to the following PLLs:
• Platform PLL
• Core PLLs
• USB PLL
• DDR PLL, etc
The cfg_eng_use0 of porsr1 register identifies whether the SYSCLK (single-ended) or
DIFF_SYSCLK (differential) is selected as the clock input to the chip.
get_sys_info has been enhanced to add the diff_sysclk so that the
various drivers can be made aware of ths diff sysclk configuration and
act accordingly.
Other changes:
-single_src to ddr_refclk_sel, as it is use for checking ddr reference clock
-Removed the print of single_src from get_sys_info as this will be
-printed whenever somebody calls get_sys_info which is not appropriate.
-Add print of single_src in checkcpu as it is called only once during initialization
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Vijay Rai <vijay.rai@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/include/asm/immap_85xx.h')
-rw-r--r-- | arch/powerpc/include/asm/immap_85xx.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h index be54920..741b861 100644 --- a/arch/powerpc/include/asm/immap_85xx.h +++ b/arch/powerpc/include/asm/immap_85xx.h @@ -1583,6 +1583,12 @@ typedef struct cpc_corenet { typedef struct ccsr_gur { u32 porsr1; /* POR status 1 */ u32 porsr2; /* POR status 2 */ +#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK +#define FSL_DCFG_PORSR1_SYSCLK_SHIFT 15 +#define FSL_DCFG_PORSR1_SYSCLK_MASK 0x1 +#define FSL_DCFG_PORSR1_SYSCLK_SINGLE_ENDED 0x1 +#define FSL_DCFG_PORSR1_SYSCLK_DIFF 0x0 +#endif u8 res_008[0x20-0x8]; u32 gpporcr1; /* General-purpose POR configuration */ u32 gpporcr2; /* General-purpose POR configuration 2 */ |