diff options
Diffstat (limited to 'drivers/clk/rockchip/clk-pll.c')
| -rw-r--r-- | drivers/clk/rockchip/clk-pll.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/clk/rockchip/clk-pll.c b/drivers/clk/rockchip/clk-pll.c index 2426582ad23a..0a9f31f2dd27 100644 --- a/drivers/clk/rockchip/clk-pll.c +++ b/drivers/clk/rockchip/clk-pll.c @@ -57,6 +57,8 @@ struct rockchip_clk_pll { struct rockchip_clk_provider *ctx; bool boost_enabled; + u32 boost_backup_pll_usage; + unsigned long boost_backup_pll_rate; unsigned long boost_low_rate; unsigned long boost_high_rate; struct regmap *boost; @@ -1581,10 +1583,12 @@ void rockchip_boost_init(struct clk_hw *hw) BOOST_BACKUP_PLL_SHIFT)); } if (!of_property_read_u32(np, "rockchip,boost-backup-pll-usage", - &value)) { - pr_debug("boost-backup-pll-usage=0x%x\n", value); + &pll->boost_backup_pll_usage)) { + pr_debug("boost-backup-pll-usage=0x%x\n", + pll->boost_backup_pll_usage); regmap_write(pll->boost, BOOST_CLK_CON, - HIWORD_UPDATE(value, BOOST_BACKUP_PLL_USAGE_MASK, + HIWORD_UPDATE(pll->boost_backup_pll_usage, + BOOST_BACKUP_PLL_USAGE_MASK, BOOST_BACKUP_PLL_USAGE_SHIFT)); } if (!of_property_read_u32(np, "rockchip,boost-switch-threshold", @@ -1674,6 +1678,33 @@ void rockchip_boost_disable_recovery_sw(struct clk_hw *hw) BOOST_SW_CTRL_SHIFT)); } +void rockchip_boost_add_core_div(struct clk_hw *hw, unsigned long prate) +{ + struct rockchip_clk_pll *pll; + unsigned int div; + + if (!hw) + return; + pll = to_rockchip_clk_pll(hw); + if (!pll->boost_enabled || pll->boost_backup_pll_rate == prate) + return; + + /* todo */ + if (pll->boost_backup_pll_usage == BOOST_BACKUP_PLL_USAGE_TARGET) + return; + /* + * cpu clock rate should be less than or equal to + * low rate when change pll rate in boost module + */ + if (pll->boost_low_rate && prate > pll->boost_low_rate) { + div = DIV_ROUND_UP(prate, pll->boost_low_rate) - 1; + regmap_write(pll->boost, BOOST_CLK_CON, + HIWORD_UPDATE(div, BOOST_CORE_DIV_MASK, + BOOST_CORE_DIV_SHIFT)); + pll->boost_backup_pll_rate = prate; + } +} + #ifdef CONFIG_DEBUG_FS #include <linux/debugfs.h> |