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author | Bo Shen <voice.shen@atmel.com> | 2014-08-06 17:24:54 +0800 |
---|---|---|
committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2014-09-19 00:11:18 +0200 |
commit | b24c1a10b53e831b28da6a69911061a28b34bbd6 (patch) | |
tree | 3ef440387dc87dbe90ce842312d72ae16dcd7ccf /arch/arm/cpu/armv7/at91 | |
parent | 7b1dc26fae813fcf7650340803972feb8829853e (diff) | |
download | u-boot-imx-b24c1a10b53e831b28da6a69911061a28b34bbd6.zip u-boot-imx-b24c1a10b53e831b28da6a69911061a28b34bbd6.tar.gz u-boot-imx-b24c1a10b53e831b28da6a69911061a28b34bbd6.tar.bz2 |
ARM: atmel: use pcr to enable or disable peripheral clock
When use pcr (peripheral control register), then we won't need
to care about the peripheral ID.
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/arm/cpu/armv7/at91')
-rw-r--r-- | arch/arm/cpu/armv7/at91/clock.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/arm/cpu/armv7/at91/clock.c b/arch/arm/cpu/armv7/at91/clock.c index 1588e0c..36ed4a6 100644 --- a/arch/arm/cpu/armv7/at91/clock.c +++ b/arch/arm/cpu/armv7/at91/clock.c @@ -114,9 +114,25 @@ int at91_clock_init(unsigned long main_clock) void at91_periph_clk_enable(int id) { struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 regval; - if (id > 31) - writel(1 << (id - 32), &pmc->pcer1); - else - writel(1 << id, &pmc->pcer); + if (id > AT91_PMC_PCR_PID_MASK) + return; + + regval = AT91_PMC_PCR_EN | AT91_PMC_PCR_CMD_WRITE | id; + + writel(regval, &pmc->pcr); +} + +void at91_periph_clk_disable(int id) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + u32 regval; + + if (id > AT91_PMC_PCR_PID_MASK) + return; + + regval = AT91_PMC_PCR_CMD_WRITE | id; + + writel(regval, &pmc->pcr); } |