diff options
| author | Lin Huang <hl@rock-chips.com> | 2016-06-28 11:10:54 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-07-12 00:27:08 +0200 |
| commit | e3d78b82a76c6069a8111b278d4af57e9788ef9e (patch) | |
| tree | 00337e51b9a8fddcc6db38ee8dd15536a5b534a6 /src/soc/rockchip/rk3399/clock.c | |
| parent | 9e624fc27f123c8b5eb6ef5a1ecd57facca16a7f (diff) | |
rockchip/rk3399: calculate clocks based on parent clock speed
Currently aclkm pclkdbg atclk clocks use apll_l as a parent, but the
apll_l frequency may change in firmware, so we need to caculate the div
value based on the apll_l frequency.
BRANCH=None
BUG=chrome-os-partner:54376
TEST=Boot from Gru
Change-Id: I2bd8886168453ce98efec58b5490c2430762769b
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 116ae863a504630e2aff056564836d84198fcae2
Original-Change-Id: I7e3a5d9e3f608ddf15592d893117c92767fcd015
Original-Signed-off-by: Lin Huang <hl@rock-chips.com>
Original-Signed-off-by: Douglas Anderson <dianders@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/356397
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15581
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/rockchip/rk3399/clock.c')
| -rw-r--r-- | src/soc/rockchip/rk3399/clock.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c index 6d40cd2578..8b274542c5 100644 --- a/src/soc/rockchip/rk3399/clock.c +++ b/src/soc/rockchip/rk3399/clock.c @@ -31,12 +31,13 @@ struct pll_div { u32 postdiv1; u32 postdiv2; u32 frac; + u32 freq; }; #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\ .refdiv = _refdiv,\ .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\ - .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};\ + .postdiv1 = _postdiv1, .postdiv2 = _postdiv2, .freq = hz};\ _Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) *\ OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz,\ #hz "Hz cannot be hit with PLL "\ @@ -491,20 +492,17 @@ void rkclk_configure_cpu(enum apll_l_frequencies apll_l_freq) u32 aclkm_div; u32 pclk_dbg_div; u32 atclk_div; + u32 apll_l_hz; + + apll_l_hz = apll_l_cfgs[apll_l_freq]->freq; rkclk_set_pll(&cru_ptr->apll_l_con[0], apll_l_cfgs[apll_l_freq]); - aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1; - assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ && - aclkm_div < 0x1f); + aclkm_div = div_round_up(apll_l_hz, ACLKM_CORE_HZ) - 1; - pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1; - assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ && - pclk_dbg_div < 0x1f); + pclk_dbg_div = div_round_up(apll_l_hz, PCLK_DBG_HZ) - 1; - atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1; - assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ && - atclk_div < 0x1f); + atclk_div = div_round_up(apll_l_hz, ATCLK_CORE_HZ) - 1; write32(&cru_ptr->clksel_con[0], RK_CLRSETBITS(ACLKM_CORE_L_DIV_CON_MASK << |