linux-kernel - [PATCH 4.19 027/118] clk: meson-axg: pcie: drop the mpll3 clock parent

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Message-Id: <20181126105100.912940259@linuxfoundation.org>
Date:   Mon, 26 Nov 2018 11:50:21 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jianxin Qin <jianxin.qin@...ogic.com>,
        Yixun Lan <yixun.lan@...ogic.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 027/118] clk: meson-axg: pcie: drop the mpll3 clock parent

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

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

[ 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 8cf74fc423e6..baabcf7c0a24 100644
--- a/drivers/clk/meson/axg.c
+++ b/drivers/clk/meson/axg.c
@@ -713,12 +713,14 @@ 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