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bcma: get CPU clock

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Add method to return the clock of the CPU. This is needed by the arch
code to calculate the mips_hpt_frequency.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hauke Mehrtens 2011-07-23 01:20:11 +02:00 • committed by John W. Linville
parent e3afe0e5be
commit 908debc8da
5 changed files with 161 additions and 0 deletions
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39
include/linux/bcma/bcma_driver_chipcommon.h
View file

@ -241,8 +241,47 @@
#define BCMA_CC_SPROM 0x0800 /* SPROM beginning */
#define BCMA_CC_SPROM_PCIE6 0x0830 /* SPROM beginning on PCIe rev >= 6 */
/* Divider allocation in 4716/47162/5356 */
#define BCMA_CC_PMU5_MAINPLL_CPU 1
#define BCMA_CC_PMU5_MAINPLL_MEM 2
#define BCMA_CC_PMU5_MAINPLL_SSB 3
/* PLL usage in 4716/47162 */
#define BCMA_CC_PMU4716_MAINPLL_PLL0 12
/* PLL usage in 5356/5357 */
#define BCMA_CC_PMU5356_MAINPLL_PLL0 0
#define BCMA_CC_PMU5357_MAINPLL_PLL0 0
/* 4706 PMU */
#define BCMA_CC_PMU4706_MAINPLL_PLL0 0
/* ALP clock on pre-PMU chips */
#define BCMA_CC_PMU_ALP_CLOCK 20000000
/* HT clock for systems with PMU-enabled chipcommon */
#define BCMA_CC_PMU_HT_CLOCK 80000000
/* PMU rev 5 (& 6) */
#define BCMA_CC_PPL_P1P2_OFF 0
#define BCMA_CC_PPL_P1_MASK 0x0f000000
#define BCMA_CC_PPL_P1_SHIFT 24
#define BCMA_CC_PPL_P2_MASK 0x00f00000
#define BCMA_CC_PPL_P2_SHIFT 20
#define BCMA_CC_PPL_M14_OFF 1
#define BCMA_CC_PPL_MDIV_MASK 0x000000ff
#define BCMA_CC_PPL_MDIV_WIDTH 8
#define BCMA_CC_PPL_NM5_OFF 2
#define BCMA_CC_PPL_NDIV_MASK 0xfff00000
#define BCMA_CC_PPL_NDIV_SHIFT 20
#define BCMA_CC_PPL_FMAB_OFF 3
#define BCMA_CC_PPL_MRAT_MASK 0xf0000000
#define BCMA_CC_PPL_MRAT_SHIFT 28
#define BCMA_CC_PPL_ABRAT_MASK 0x08000000
#define BCMA_CC_PPL_ABRAT_SHIFT 27
#define BCMA_CC_PPL_FDIV_MASK 0x07ffffff
#define BCMA_CC_PPL_PLLCTL_OFF 4
#define BCMA_CC_PPL_PCHI_OFF 5
#define BCMA_CC_PPL_PCHI_MASK 0x0000003f
/* Data for the PMU, if available.
* Check availability with ((struct bcma_chipcommon)->capabilities & BCMA_CC_CAP_PMU)