diff options
| author | David Hendricks <dhendrix@chromium.org> | 2015-09-02 18:10:14 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-09-08 11:50:50 +0000 |
| commit | 4bd65e1c0cd53802abd3598c03d28b82a11be46d (patch) | |
| tree | 888ea67501c02c7b34972e9f208815c04f45c1aa /src/soc/rockchip/rk3288/include | |
| parent | 68957b33ed4f9261bd74217aa58e9e1e08ac2aea (diff) | |
rk3288: Allow board-specific APLL (CPU clock) settings
This changes the API to rkclk_configure_cpu() such that we can pass
in the desired APLL frequency in each veyron board's bootblock.c.
Devices with a constrainted form facter (rialto and possibly mickey)
will use this to run firmware at a slower speed to mitigate risk
of thermal issues (due to the RK808, not the RK3288).
BUG=chrome-os-partner:42054
BRANCH=none
TEST=amstan says rialto is noticably cooler (and slower)
Change-Id: I28b332e1d484bd009599944cd9f5cf633ea468dd
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d10af5e18b4131a00f202272e405bd22eab4caeb
Original-Change-Id: I960cb6ff512c058e72032aa2cbadedde97510631
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/297190
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/11582
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/rockchip/rk3288/include')
| -rw-r--r-- | src/soc/rockchip/rk3288/include/soc/clock.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/soc/rockchip/rk3288/include/soc/clock.h b/src/soc/rockchip/rk3288/include/soc/clock.h index 08d9d45a3f..3fccecb8f2 100644 --- a/src/soc/rockchip/rk3288/include/soc/clock.h +++ b/src/soc/rockchip/rk3288/include/soc/clock.h @@ -24,11 +24,15 @@ #define OSC_HZ (24*MHz) -#define APLL_HZ (1800*MHz) #define GPLL_HZ (594*MHz) #define CPLL_HZ (384*MHz) #define NPLL_HZ (384*MHz) +enum apll_frequencies { + APLL_1800_MHZ, + APLL_1392_MHZ, +}; + /* The SRAM is clocked off aclk_bus, so we want to max it out for boot speed. */ #define PD_BUS_ACLK_HZ (297000*KHz) #define PD_BUS_HCLK_HZ (148500*KHz) @@ -44,7 +48,7 @@ void rkclk_ddr_reset(u32 ch, u32 ctl, u32 phy); void rkclk_ddr_phy_ctl_reset(u32 ch, u32 n); void rkclk_configure_ddr(unsigned int hz); void rkclk_configure_i2s(unsigned int hz); -void rkclk_configure_cpu(void); +void rkclk_configure_cpu(enum apll_frequencies apll_freq); void rkclk_configure_crypto(unsigned int hz); void rkclk_configure_tsadc(unsigned int hz); void rkclk_configure_vop_aclk(u32 vop_id, u32 aclk_hz); |