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clk: qcom: rcg2: Make hw_clk_ctrl toggleable

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Certain SoCs use the HW_CLK_CTRL feature on some of the clocks they
host. This allows the clocks to be turned on automatically when a
downstream branch tries to change rate or config.

Make it togglable so that we can utilize this.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230517-topic-waipio-gpucc-v1-2-4f40e282af1d@linaro.org
This commit is contained in:
Konrad Dybcio 2023-05-17 18:40:39 +02:00 committed by Bjorn Andersson
parent 6de1bd7405
commit a0e0ec7424
2 changed files with 4 additions and 0 deletions
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2
drivers/clk/qcom/clk-rcg.h
View File

@ -141,6 +141,7 @@ extern const struct clk_ops clk_dyn_rcg_ops;
* @clkr: regmap clock handle
* @cfg_off: defines the cfg register offset from the CMD_RCGR + CFG_REG
* @parked_cfg: cached value of the CFG register for parked RCGs
* @hw_clk_ctrl: whether to enable hardware clock control
*/
struct clk_rcg2 {
u32 cmd_rcgr;
@ -152,6 +153,7 @@ struct clk_rcg2 {
struct clk_regmap clkr;
u8 cfg_off;
u32 parked_cfg;
bool hw_clk_ctrl;
};
#define to_clk_rcg2(_hw) container_of(to_clk_regmap(_hw), struct clk_rcg2, clkr)

2
drivers/clk/qcom/clk-rcg2.c
View File

@ -325,6 +325,8 @@ static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f,
cfg |= rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
if (rcg->mnd_width && f->n && (f->m != f->n))
cfg |= CFG_MODE_DUAL_EDGE;
if (rcg->hw_clk_ctrl)
cfg |= CFG_HW_CLK_CTRL_MASK;
*_cfg &= ~mask;
*_cfg |= cfg;