[PATCH 6.18 0618/1518] clk: mediatek: mt8135: Fix inverted gate control for devapc_ck

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Akari Tsuyukusa <akkun11.open@gmail.com>

[ Upstream commit fd0e3e4edea6a3e4da91be608ca2fb9b348f9e32 ]

The devapc_ck (CLK_INFRA_DEVAPC) on MT8135 is currently using
"mtk_clk_gate_ops_setclr". However, checking the downstream kernel reveals
that this clock is configured with set:enable and clr:disable making
"mtk_clk_gate_ops_setclr_inv" the appropriate choice.
But, it is strange that some downstream kernels are not like that.

Amazon: INV
ChromiumOS (early): not INV
ChromiumOS 3.16 to 3.18-revew-v2: INV
ChromiumOS 3.18-review-v3 and later (sent to kernel.org): not INV

Link: https://github.com/amazon-oss/android_kernel_amazon_mt8135/blob/e2b2163a8ec4a7c8d961c89003a15b4ba0f0e371/arch/arm/mach-mt8135/mt_clkmgr.c#L1022-L1028
Link: https://github.com/mtk09422/chromiumos-third_party-kernel-mediatek/blob/4b624ee66e65d5dcd43fca36b313086efae8922a/arch/arm/boot/dts/mt8135-clocks.dtsi#L944-L948
Link: https://github.com/mtk09422/chromiumos-third_party-kernel-mediatek/blob/decd80c01d0dbe9f3afa8ff72273b5618b418180/drivers/clk/mediatek/clk-mt8135.c#L881-L882
Link: https://github.com/mtk09422/chromiumos-third_party-kernel-mediatek/blob/9b6f06cb7637100aa1a42e1fc351b36b384a1c54/drivers/clk/mediatek/clk-mt8135.c#L450
Fixes: a8aede794843 ("clk: mediatek: Add basic clocks for Mediatek MT8135.")
Signed-off-by: Akari Tsuyukusa <akkun11.open@gmail.com>
Signed-off-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/clk/mediatek/clk-mt8135.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/mediatek/clk-mt8135.c b/drivers/clk/mediatek/clk-mt8135.c
index 084e48a554c26..1d20e15608f77 100644
--- a/drivers/clk/mediatek/clk-mt8135.c
+++ b/drivers/clk/mediatek/clk-mt8135.c
@@ -409,6 +409,9 @@ static const struct mtk_gate_regs infra_cg_regs = {
 	GATE_MTK_FLAGS(_id, _name, _parent, &infra_cg_regs, _shift,	\
 		       &mtk_clk_gate_ops_setclr, CLK_IS_CRITICAL)
 
+#define GATE_ICG_INV(_id, _name, _parent, _shift)	\
+	GATE_MTK(_id, _name, _parent, &infra_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
 static const struct mtk_gate infra_clks[] = {
 	GATE_DUMMY(CLK_DUMMY, "infra_dummy"),
 	GATE_ICG(CLK_INFRA_PMIC_WRAP, "pmic_wrap_ck", "axi_sel", 23),
@@ -419,7 +422,7 @@ static const struct mtk_gate infra_clks[] = {
 	GATE_ICG(CLK_INFRA_CPUM, "cpum_ck", "cpum_tck_in", 15),
 	GATE_ICG_AO(CLK_INFRA_M4U, "m4u_ck", "mem_sel", 8),
 	GATE_ICG(CLK_INFRA_MFGAXI, "mfgaxi_ck", "axi_sel", 7),
-	GATE_ICG(CLK_INFRA_DEVAPC, "devapc_ck", "axi_sel", 6),
+	GATE_ICG_INV(CLK_INFRA_DEVAPC, "devapc_ck", "axi_sel", 6),
 	GATE_ICG(CLK_INFRA_AUDIO, "audio_ck", "aud_intbus_sel", 5),
 	GATE_ICG(CLK_INFRA_MFG_BUS, "mfg_bus_ck", "axi_sel", 2),
 	GATE_ICG(CLK_INFRA_SMI, "smi_ck", "smi_sel", 1),
-- 
2.53.0