linux-kernel - [PATCH AUTOSEL 4.19 31/44] clk: meson-axg: pcie: drop the mpll3 clock parent

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Date:   Tue, 13 Nov 2018 00:49:37 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Yixun Lan <yixun.lan@...ogic.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Sasha Levin <sashal@...nel.org>,
        linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 31/44] clk: meson-axg: pcie: drop the mpll3 clock parent

From: Yixun Lan <yixun.lan@...ogic.com>

[ Upstream commit 69b93104c7ec5668019caf5d2dbfd0e182df06db ]

We found the PCIe driver doesn't really work with
the mpll3 clock which is actually reserved for debug,
So drop it from the mux list.

Fixes: 33b89db68236 ("clk: meson-axg: add clocks required by pcie driver")
Tested-by: Jianxin Qin <jianxin.qin@...ogic.com>
Signed-off-by: Yixun Lan <yixun.lan@...ogic.com>
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/meson/axg.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/meson/axg.c b/drivers/clk/meson/axg.c
index 00ce62ad6416..a95152071087 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -700,12 +700,14 @@ static struct clk_regmap axg_pcie_mux = {
 		.offset = HHI_PCIE_PLL_CNTL6,
 		.mask = 0x1,
 		.shift = 2,
+		/* skip the parent mpll3, reserved for debug */
+		.table = (u32[]){ 1 },
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "pcie_mux",
 		.ops = &clk_regmap_mux_ops,
-		.parent_names = (const char *[]){ "mpll3", "pcie_pll" },
-		.num_parents = 2,
+		.parent_names = (const char *[]){ "pcie_pll" },
+		.num_parents = 1,
 		.flags = CLK_SET_RATE_PARENT,
 	},
 };
-- 
2.17.1