openwrt/target/linux/ipq806x/patches-5.15/100-v5.18-08-linux-next-clk-qcom-gcc-ipq806x-add-unusued-flag-for-critical-c.patch

From 28aa450d38e521de45be951df052d2c49a17fae2 Mon Sep 17 00:00:00 2001
From: Ansuel Smith <ansuelsmth@gmail.com>
Date: Sat, 26 Feb 2022 14:52:28 +0100
Subject: [PATCH 08/14] clk: qcom: gcc-ipq806x: add unusued flag for critical
 clock

Some clocks are used by other devices present on the SoC. For example
the gsbi4_h_clk is used by RPM and is if disabled cause the RPM to
reject any regulator change command. These clock should never be
disabled.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220226135235.10051-9-ansuelsmth@gmail.com
---
 drivers/clk/qcom/gcc-ipq806x.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -798,7 +798,7 @@ static struct clk_rcg gsbi4_qup_src = {
 			.parent_data = gcc_pxo_pll8,
 			.num_parents = ARRAY_SIZE(gcc_pxo_pll8),
 			.ops = &clk_rcg_ops,
-			.flags = CLK_SET_PARENT_GATE,
+			.flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -816,7 +816,7 @@ static struct clk_branch gsbi4_qup_clk =
 			},
 			.num_parents = 1,
 			.ops = &clk_branch_ops,
-			.flags = CLK_SET_RATE_PARENT,
+			.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -900,7 +900,7 @@ static struct clk_rcg gsbi6_qup_src = {
 			.parent_data = gcc_pxo_pll8,
 			.num_parents = ARRAY_SIZE(gcc_pxo_pll8),
 			.ops = &clk_rcg_ops,
-			.flags = CLK_SET_PARENT_GATE,
+			.flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -969,7 +969,7 @@ static struct clk_branch gsbi7_qup_clk =
 			},
 			.num_parents = 1,
 			.ops = &clk_branch_ops,
-			.flags = CLK_SET_RATE_PARENT,
+			.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -1015,6 +1015,7 @@ static struct clk_branch gsbi4_h_clk = {
 		.hw.init = &(struct clk_init_data){
 			.name = "gsbi4_h_clk",
 			.ops = &clk_branch_ops,
+			.flags = CLK_IGNORE_UNUSED,
 		},
 	},
 };