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From: Dong Aisheng <aisheng.dong@nxp.com>
To: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, sboyd@kernel.org,
	dongas86@gmail.com, shawnguo@kernel.org, kernel@pengutronix.de,
	abel.vesa@nxp.com, aford173@gmail.com,
	Dong Aisheng <aisheng.dong@nxp.com>,
	stable@vger.kernel.org
Subject: [PATCH 1/1] clk: imx6q: fix uart earlycon unwork
Date: Fri,  2 Jul 2021 16:54:38 +0800	[thread overview]
Message-ID: <20210702085438.1988087-1-aisheng.dong@nxp.com> (raw)

The earlycon depends on the bootloader setup UART clocks being retained.
There're actually two uart clocks (ipg, per) on MX6QDL,
but the 'Fixes' commit change to register only one which means
another clock may be disabled during booting phase
and result in the earlycon unwork.

Cc: stable@vger.kernel.org # v5.10+
Fixes: 379c9a24cc23 ("clk: imx: Fix reparenting of UARTs not associated with stdout")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
 drivers/clk/imx/clk-imx6q.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/imx/clk-imx6q.c b/drivers/clk/imx/clk-imx6q.c
index 496900de0b0b..de36f58d551c 100644
--- a/drivers/clk/imx/clk-imx6q.c
+++ b/drivers/clk/imx/clk-imx6q.c
@@ -974,6 +974,6 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
 			       hws[IMX6QDL_CLK_PLL3_USB_OTG]->clk);
 	}
 
-	imx_register_uart_clocks(1);
+	imx_register_uart_clocks(2);
 }
 CLK_OF_DECLARE(imx6q, "fsl,imx6q-ccm", imx6q_clocks_init);
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Dong Aisheng <aisheng.dong@nxp.com>
To: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, sboyd@kernel.org,
	dongas86@gmail.com, shawnguo@kernel.org, kernel@pengutronix.de,
	abel.vesa@nxp.com, aford173@gmail.com,
	Dong Aisheng <aisheng.dong@nxp.com>,
	stable@vger.kernel.org
Subject: [PATCH 1/1] clk: imx6q: fix uart earlycon unwork
Date: Fri,  2 Jul 2021 16:54:38 +0800	[thread overview]
Message-ID: <20210702085438.1988087-1-aisheng.dong@nxp.com> (raw)

The earlycon depends on the bootloader setup UART clocks being retained.
There're actually two uart clocks (ipg, per) on MX6QDL,
but the 'Fixes' commit change to register only one which means
another clock may be disabled during booting phase
and result in the earlycon unwork.

Cc: stable@vger.kernel.org # v5.10+
Fixes: 379c9a24cc23 ("clk: imx: Fix reparenting of UARTs not associated with stdout")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
 drivers/clk/imx/clk-imx6q.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/imx/clk-imx6q.c b/drivers/clk/imx/clk-imx6q.c
index 496900de0b0b..de36f58d551c 100644
--- a/drivers/clk/imx/clk-imx6q.c
+++ b/drivers/clk/imx/clk-imx6q.c
@@ -974,6 +974,6 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
 			       hws[IMX6QDL_CLK_PLL3_USB_OTG]->clk);
 	}
 
-	imx_register_uart_clocks(1);
+	imx_register_uart_clocks(2);
 }
 CLK_OF_DECLARE(imx6q, "fsl,imx6q-ccm", imx6q_clocks_init);
-- 
2.25.1


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             reply	other threads:[~2021-07-02  8:55 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02  8:54 Dong Aisheng [this message]
2021-07-02  8:54 ` [PATCH 1/1] clk: imx6q: fix uart earlycon unwork Dong Aisheng
2021-07-19 10:39 ` Abel Vesa
2021-07-19 10:39   ` Abel Vesa
2021-07-27 20:51   ` Stephen Boyd
2021-07-27 20:51     ` Stephen Boyd
2021-07-28  8:28     ` Abel Vesa
2021-07-28  8:28       ` Abel Vesa
2021-08-06  1:12 ` Stephen Boyd
2021-08-06  1:12   ` Stephen Boyd

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