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| author | Baruch Siach <baruch@tkos.co.il> | 2010-06-10 13:14:32 +0400 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-07-26 16:18:18 +0400 |
| commit | ac0eb0f3ca3e3fff6ac083ee3a51b98f87d67843 (patch) | |
| tree | c84fb2892d3b543892d1da2eac2b2d7d3030ecf9 /arch/arm/mach-mx25 | |
| parent | fd3c46b3062ac1ce0aa532c81922f9a0e28a6454 (diff) | |
| download | linux-ac0eb0f3ca3e3fff6ac083ee3a51b98f87d67843.tar.xz | |
mx25: add a comment documenting undocumented IPG clocks
The information in the i.MX25 Reference Manual is lacking. Add information from
the Freescale BSP.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx25')
| -rw-r--r-- | arch/arm/mach-mx25/clock.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-mx25/clock.c b/arch/arm/mach-mx25/clock.c index 74cf27d48bfb..2bb4f1d73cbb 100644 --- a/arch/arm/mach-mx25/clock.c +++ b/arch/arm/mach-mx25/clock.c @@ -179,6 +179,28 @@ static void clk_cgcr_disable(struct clk *clk) .secondary = s, \ } +/* + * Note: the following IPG clock gating bits are wrongly marked "Reserved" in + * the i.MX25 Reference Manual Rev 1, table 15-13. The information below is + * taken from the Freescale released BSP. + * + * bit reg offset clock + * + * 0 CGCR1 0 AUDMUX + * 12 CGCR1 12 ESAI + * 16 CGCR1 16 GPIO1 + * 17 CGCR1 17 GPIO2 + * 18 CGCR1 18 GPIO3 + * 23 CGCR1 23 I2C1 + * 24 CGCR1 24 I2C2 + * 25 CGCR1 25 I2C3 + * 27 CGCR1 27 IOMUXC + * 28 CGCR1 28 KPP + * 30 CGCR1 30 OWIRE + * 36 CGCR2 4 RTIC + * 51 CGCR2 19 WDOG + */ + DEFINE_CLOCK(gpt_clk, 0, CCM_CGCR0, 5, get_rate_gpt, NULL, NULL); DEFINE_CLOCK(uart_per_clk, 0, CCM_CGCR0, 15, get_rate_uart, NULL, NULL); DEFINE_CLOCK(ssi1_per_clk, 0, CCM_CGCR0, 13, get_rate_ipg, NULL, NULL); |