From e3d78b82a76c6069a8111b278d4af57e9788ef9e Mon Sep 17 00:00:00 2001 From: Lin Huang Date: Tue, 28 Jun 2016 11:10:54 +0800 Subject: 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 Original-Commit-Id: 116ae863a504630e2aff056564836d84198fcae2 Original-Change-Id: I7e3a5d9e3f608ddf15592d893117c92767fcd015 Original-Signed-off-by: Lin Huang Original-Signed-off-by: Douglas Anderson Original-Reviewed-on: https://chromium-review.googlesource.com/356397 Original-Reviewed-by: Aaron Durbin Reviewed-on: https://review.coreboot.org/15581 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh --- src/soc/rockchip/rk3399/clock.c | 18 ++++++++---------- src/soc/rockchip/rk3399/include/soc/clock.h | 1 - 2 files changed, 8 insertions(+), 11 deletions(-) (limited to 'src/soc') 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 << diff --git a/src/soc/rockchip/rk3399/include/soc/clock.h b/src/soc/rockchip/rk3399/include/soc/clock.h index 806e1ce348..6781b5c691 100644 --- a/src/soc/rockchip/rk3399/include/soc/clock.h +++ b/src/soc/rockchip/rk3399/include/soc/clock.h @@ -73,7 +73,6 @@ static struct rk3399_pmucru_reg * const pmucru_ptr = (void *)PMUCRU_BASE; static struct rk3399_cru_reg * const cru_ptr = (void *)CRU_BASE; #define OSC_HZ (24*MHz) -#define APLL_HZ (600*MHz) #define GPLL_HZ (594*MHz) #define CPLL_HZ (384*MHz) #define PPLL_HZ (594*MHz) -- cgit v1.2.3