This is a note to let you know that I've just added the patch titled
clk: mediatek: mt7622: Properly use CLK_IS_CRITICAL flag
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clk-mediatek-mt7622-properly-use-clk_is_critical-fla.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5579a3373abe272484005e9056d45f81852961bf
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Date: Mon Mar 6 15:05:12 2023 +0100
clk: mediatek: mt7622: Properly use CLK_IS_CRITICAL flag
[ Upstream commit fa8c0d01df62130ff596d560380a6f844f62639e ]
Instead of calling clk_prepare_enable() for clocks that shall stay
enabled, use the CLK_IS_CRITICAL flag, which purpose is exactly that.
Fixes: 2fc0a509e4ee ("clk: mediatek: add clock support for MT7622 SoC")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230306140543.1813621-24-angelogioacchino.delregno@xxxxxxxxxxxxx
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/mediatek/clk-mt7622.c b/drivers/clk/mediatek/clk-mt7622.c
index 41af8d420bbf8..1c0049fbeb69c 100644
--- a/drivers/clk/mediatek/clk-mt7622.c
+++ b/drivers/clk/mediatek/clk-mt7622.c
@@ -50,9 +50,9 @@
_pd_reg, _pd_shift, _tuner_reg, _pcw_reg, _pcw_shift, \
NULL, "clkxtal")
-#define GATE_APMIXED(_id, _name, _parent, _shift) \
- GATE_MTK(_id, _name, _parent, &apmixed_cg_regs, _shift, \
- &mtk_clk_gate_ops_no_setclr_inv)
+#define GATE_APMIXED_AO(_id, _name, _parent, _shift) \
+ GATE_MTK_FLAGS(_id, _name, _parent, &apmixed_cg_regs, _shift, \
+ &mtk_clk_gate_ops_no_setclr_inv, CLK_IS_CRITICAL)
#define GATE_INFRA(_id, _name, _parent, _shift) \
GATE_MTK(_id, _name, _parent, &infra_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
@@ -66,6 +66,10 @@
#define GATE_PERI0(_id, _name, _parent, _shift) \
GATE_MTK(_id, _name, _parent, &peri0_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+#define GATE_PERI0_AO(_id, _name, _parent, _shift) \
+ GATE_MTK_FLAGS(_id, _name, _parent, &peri0_cg_regs, _shift, \
+ &mtk_clk_gate_ops_setclr, CLK_IS_CRITICAL)
+
#define GATE_PERI1(_id, _name, _parent, _shift) \
GATE_MTK(_id, _name, _parent, &peri1_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
@@ -315,7 +319,7 @@ static const struct mtk_pll_data plls[] = {
};
static const struct mtk_gate apmixed_clks[] = {
- GATE_APMIXED(CLK_APMIXED_MAIN_CORE_EN, "main_core_en", "mainpll", 5),
+ GATE_APMIXED_AO(CLK_APMIXED_MAIN_CORE_EN, "main_core_en", "mainpll", 5),
};
static const struct mtk_gate infra_clks[] = {
@@ -450,7 +454,7 @@ static const struct mtk_gate peri_clks[] = {
GATE_PERI0(CLK_PERI_AP_DMA_PD, "peri_ap_dma_pd", "axi_sel", 12),
GATE_PERI0(CLK_PERI_MSDC30_0_PD, "peri_msdc30_0", "msdc30_0_sel", 13),
GATE_PERI0(CLK_PERI_MSDC30_1_PD, "peri_msdc30_1", "msdc30_1_sel", 14),
- GATE_PERI0(CLK_PERI_UART0_PD, "peri_uart0_pd", "axi_sel", 17),
+ GATE_PERI0_AO(CLK_PERI_UART0_PD, "peri_uart0_pd", "axi_sel", 17),
GATE_PERI0(CLK_PERI_UART1_PD, "peri_uart1_pd", "axi_sel", 18),
GATE_PERI0(CLK_PERI_UART2_PD, "peri_uart2_pd", "axi_sel", 19),
GATE_PERI0(CLK_PERI_UART3_PD, "peri_uart3_pd", "axi_sel", 20),
@@ -478,12 +482,12 @@ static struct mtk_composite infra_muxes[] = {
static struct mtk_composite top_muxes[] = {
/* CLK_CFG_0 */
- MUX_GATE(CLK_TOP_AXI_SEL, "axi_sel", axi_parents,
- 0x040, 0, 3, 7),
- MUX_GATE(CLK_TOP_MEM_SEL, "mem_sel", mem_parents,
- 0x040, 8, 1, 15),
- MUX_GATE(CLK_TOP_DDRPHYCFG_SEL, "ddrphycfg_sel", ddrphycfg_parents,
- 0x040, 16, 1, 23),
+ MUX_GATE_FLAGS(CLK_TOP_AXI_SEL, "axi_sel", axi_parents,
+ 0x040, 0, 3, 7, CLK_IS_CRITICAL),
+ MUX_GATE_FLAGS(CLK_TOP_MEM_SEL, "mem_sel", mem_parents,
+ 0x040, 8, 1, 15, CLK_IS_CRITICAL),
+ MUX_GATE_FLAGS(CLK_TOP_DDRPHYCFG_SEL, "ddrphycfg_sel", ddrphycfg_parents,
+ 0x040, 16, 1, 23, CLK_IS_CRITICAL),
MUX_GATE(CLK_TOP_ETH_SEL, "eth_sel", eth_parents,
0x040, 24, 3, 31),
@@ -621,10 +625,6 @@ static int mtk_topckgen_init(struct platform_device *pdev)
mtk_clk_register_gates(&pdev->dev, node, top_clks,
ARRAY_SIZE(top_clks), clk_data);
- clk_prepare_enable(clk_data->hws[CLK_TOP_AXI_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_MEM_SEL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_TOP_DDRPHYCFG_SEL]->clk);
-
return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
}
@@ -667,9 +667,6 @@ static int mtk_apmixedsys_init(struct platform_device *pdev)
mtk_clk_register_gates(&pdev->dev, node, apmixed_clks,
ARRAY_SIZE(apmixed_clks), clk_data);
- clk_prepare_enable(clk_data->hws[CLK_APMIXED_ARMPLL]->clk);
- clk_prepare_enable(clk_data->hws[CLK_APMIXED_MAIN_CORE_EN]->clk);
-
return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
}
@@ -697,8 +694,6 @@ static int mtk_pericfg_init(struct platform_device *pdev)
if (r)
return r;
- clk_prepare_enable(clk_data->hws[CLK_PERI_UART0_PD]->clk);
-
mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc[1]);
return 0;
