[PATCH v2 22/23] clk: mediatek: clk-mt7986-topckgen: Properly keep some clocks enabled

AngeloGioacchino Del Regno
2022-12-23T09:46:12Z

Instead of calling clk_prepare_enable() on a bunch of clocks at probe
time, set the CLK_IS_CRITICAL flag to the same as these are required
to be always on, and this is the right way of achieving that.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/clk/mediatek/clk-mt7986-topckgen.c | 46 +++++++++++-----------
1 file changed, 24 insertions(+), 22 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt7986-topckgen.c b/drivers/clk/mediatek/clk-mt7986-topckgen.c
index d7df9585787f..bf3088e6d9e3 100644
--- a/drivers/clk/mediatek/clk-mt7986-topckgen.c
+++ b/drivers/clk/mediatek/clk-mt7986-topckgen.c
@@ -202,16 +202,23 @@ static const struct mtk_mux top_muxes[] = {
MUX_GATE_CLR_SET_UPD(CLK_TOP_F_26M_ADC_SEL, "f_26m_adc_sel",
f_26m_adc_parents, 0x020, 0x024, 0x028, 16, 1, 23,
0x1C0, 10),
- MUX_GATE_CLR_SET_UPD(CLK_TOP_DRAMC_SEL, "dramc_sel", f_26m_adc_parents,
- 0x020, 0x024, 0x028, 24, 1, 31, 0x1C0, 11),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_DRAMC_SEL, "dramc_sel",
+ f_26m_adc_parents, 0x020, 0x024, 0x028,
+ 24, 1, 31, 0x1C0, 11,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
/* CLK_CFG_3 */
- MUX_GATE_CLR_SET_UPD(CLK_TOP_DRAMC_MD32_SEL, "dramc_md32_sel",
- dramc_md32_parents, 0x030, 0x034, 0x038, 0, 1, 7,
- 0x1C0, 12),
- MUX_GATE_CLR_SET_UPD(CLK_TOP_SYSAXI_SEL, "sysaxi_sel", sysaxi_parents,
- 0x030, 0x034, 0x038, 8, 2, 15, 0x1C0, 13),
- MUX_GATE_CLR_SET_UPD(CLK_TOP_SYSAPB_SEL, "sysapb_sel", sysapb_parents,
- 0x030, 0x034, 0x038, 16, 2, 23, 0x1C0, 14),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_DRAMC_MD32_SEL, "dramc_md32_sel",
+ dramc_md32_parents, 0x030, 0x034, 0x038,
+ 0, 1, 7, 0x1C0, 12,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SYSAXI_SEL, "sysaxi_sel",
+ sysaxi_parents, 0x030, 0x034, 0x038,
+ 8, 2, 15, 0x1C0, 13,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SYSAPB_SEL, "sysapb_sel",
+ sysapb_parents, 0x030, 0x034, 0x038,
+ 16, 2, 23, 0x1C0, 14,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
MUX_GATE_CLR_SET_UPD(CLK_TOP_ARM_DB_MAIN_SEL, "arm_db_main_sel",
arm_db_main_parents, 0x030, 0x034, 0x038, 24, 1,
31, 0x1C0, 15),
@@ -234,9 +241,10 @@ static const struct mtk_mux top_muxes[] = {
MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_325M_SEL, "sgm_325m_sel",
sgm_325m_parents, 0x050, 0x054, 0x058, 8, 1, 15,
0x1C0, 21),
- MUX_GATE_CLR_SET_UPD(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel",
- sgm_reg_parents, 0x050, 0x054, 0x058, 16, 1, 23,
- 0x1C0, 22),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_SGM_REG_SEL, "sgm_reg_sel",
+ sgm_reg_parents, 0x050, 0x054, 0x058,
+ 16, 1, 23, 0x1C0, 22,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
MUX_GATE_CLR_SET_UPD(CLK_TOP_A1SYS_SEL, "a1sys_sel", a1sys_parents,
0x050, 0x054, 0x058, 24, 1, 31, 0x1C0, 23),
/* CLK_CFG_6 */
@@ -252,9 +260,10 @@ static const struct mtk_mux top_muxes[] = {
f_26m_adc_parents, 0x060, 0x064, 0x068, 24, 1, 31,
0x1C0, 27),
/* CLK_CFG_7 */
- MUX_GATE_CLR_SET_UPD(CLK_TOP_F26M_SEL, "csw_f26m_sel",
- f_26m_adc_parents, 0x070, 0x074, 0x078, 0, 1, 7,
- 0x1C0, 28),
+ MUX_GATE_CLR_SET_UPD_FLAGS(CLK_TOP_F26M_SEL, "csw_f26m_sel",
+ f_26m_adc_parents, 0x070, 0x074, 0x078,
+ 0, 1, 7, 0x1C0, 28,
+ CLK_IS_CRITICAL | CLK_SET_RATE_PARENT),
MUX_GATE_CLR_SET_UPD(CLK_TOP_AUD_L_SEL, "aud_l_sel", aud_l_parents,
0x070, 0x074, 0x078, 8, 2, 15, 0x1C0, 29),
MUX_GATE_CLR_SET_UPD(CLK_TOP_A_TUNER_SEL, "a_tuner_sel",
@@ -306,13 +315,6 @@ static int clk_mt7986_topckgen_probe(struct platform_device *pdev)
mtk_clk_register_muxes(top_muxes, ARRAY_SIZE(top_muxes), node,
&mt7986_clk_lock, clk_data, &pdev->dev);

- clk_prepare_enable(clk_data->hws[CLK_TOP_SYSAXI_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_SYSAPB_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_DRAMC_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_DRAMC_MD32_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_F26M_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_SGM_REG_SEL]->clk);
-
r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);

if (r) {
--
2.39.0