diff options
Diffstat (limited to 'arch/arm/mach-ep93xx/clock.c')
| -rw-r--r-- | arch/arm/mach-ep93xx/clock.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c index 5f80092b6ace..e29bdef9b2e2 100644 --- a/arch/arm/mach-ep93xx/clock.c +++ b/arch/arm/mach-ep93xx/clock.c @@ -96,6 +96,10 @@ static struct clk clk_keypad = { .enable_mask = EP93XX_SYSCON_KEYTCHCLKDIV_KEN, .set_rate = set_keytchclk_rate, }; +static struct clk clk_spi = { + .parent = &clk_xtali, + .rate = EP93XX_EXT_CLK_RATE, +}; static struct clk clk_pwm = { .parent = &clk_xtali, .rate = EP93XX_EXT_CLK_RATE, @@ -186,6 +190,7 @@ static struct clk_lookup clocks[] = { INIT_CK("ep93xx-ohci", NULL, &clk_usb_host), INIT_CK("ep93xx-keypad", NULL, &clk_keypad), INIT_CK("ep93xx-fb", NULL, &clk_video), + INIT_CK("ep93xx-spi.0", NULL, &clk_spi), INIT_CK(NULL, "pwm_clk", &clk_pwm), INIT_CK(NULL, "m2p0", &clk_m2p0), INIT_CK(NULL, "m2p1", &clk_m2p1), @@ -473,6 +478,14 @@ static int __init ep93xx_clock_init(void) /* Initialize the pll2 derived clocks */ clk_usb_host.rate = clk_pll2.rate / (((value >> 28) & 0xf) + 1); + /* + * EP93xx SSP clock rate was doubled in version E2. For more information + * see: + * http://www.cirrus.com/en/pubs/appNote/AN273REV4.pdf + */ + if (ep93xx_chip_revision() < EP93XX_CHIP_REV_E2) + clk_spi.rate /= 2; + pr_info("PLL1 running at %ld MHz, PLL2 at %ld MHz\n", clk_pll1.rate / 1000000, clk_pll2.rate / 1000000); pr_info("FCLK %ld MHz, HCLK %ld MHz, PCLK %ld MHz\n", |