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author | Boris BREZILLON <b.brezillon@overkiz.com> | 2013-10-11 10:48:26 +0200 |
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committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2013-12-02 15:31:22 +0100 |
commit | 1a748d2bc5061b72588013a720645661345c0e65 (patch) | |
tree | e27047e6a1437f2cdc3a737d0472f629d0e9f7ca /include/linux/clk | |
parent | 38d34c3120b5588e2bd561baa4c5cfef1a4917bb (diff) | |
download | linux-stable-1a748d2bc5061b72588013a720645661345c0e65.tar.gz linux-stable-1a748d2bc5061b72588013a720645661345c0e65.tar.bz2 linux-stable-1a748d2bc5061b72588013a720645661345c0e65.zip |
clk: at91: add PMC pll clocks
This patch adds new at91 pll clock implementation using common clk framework.
The pll clock layout describe the PLLX register layout.
There are four pll clock layouts:
- at91rm9200
- at91sam9g20
- at91sam9g45
- sama5d3
PLL clocks are given characteristics:
- min/max clock source rate
- ranges of valid clock output rates
- values to set in out and icpll fields for each supported output range
These characteristics are checked during rate change to avoid
over/underclocking.
These characteristics are described in atmel's SoC datasheet in
"Electrical Characteristics" paragraph.
Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'include/linux/clk')
-rw-r--r-- | include/linux/clk/at91_pmc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h index 00c45b3510bf..a6911ebbd02a 100644 --- a/include/linux/clk/at91_pmc.h +++ b/include/linux/clk/at91_pmc.h @@ -164,6 +164,8 @@ extern void __iomem *at91_pmc_base; #define AT91_PMC_CFDEV (1 << 18) /* Clock Failure Detector Event [some SAM9] */ #define AT91_PMC_IMR 0x6c /* Interrupt Mask Register */ +#define AT91_PMC_PLLICPR 0x80 /* PLL Charge Pump Current Register */ + #define AT91_PMC_PROT 0xe4 /* Write Protect Mode Register [some SAM9] */ #define AT91_PMC_WPEN (0x1 << 0) /* Write Protect Enable */ #define AT91_PMC_WPKEY (0xffffff << 8) /* Write Protect Key */ |