From: Stephen Boyd <sboyd@codeaurora.org>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-clk@vger.kernel.org, Shawn Guo <shawnguo@kernel.org>,
Fabio Estevam <fabio.estevam@nxp.com>,
Michael Turquette <mturquette@baylibre.com>,
Chris Healy <Chris.Healy@zii.aero>,
linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de
Subject: Re: [PATCH] clk: imx51: uart4, uart5 gates only exist on imx50, imx53
Date: Thu, 21 Dec 2017 16:00:38 -0800 [thread overview]
Message-ID: <20171222000038.GI7997@codeaurora.org> (raw)
In-Reply-To: <20171213115748.14106-1-p.zabel@pengutronix.de>
On 12/13, Philipp Zabel wrote:
> i.MX51 only has 3 UARTs and no CCGR7 register. In place of the CCGR7
> register on i.MX50/i.MX53 that contains the ipg and per clock gates
> for UARTs 4 and 5, on i.MX51 there is the CMEOR register.
>
> Without this patch, the code disabling the UART clocks would also clear
> the mod_en_ov_vpu bit in the CMEOR register, among others, which causes
> register accesses to the VPU to lock up the system.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---
Applied to clk-next
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] clk: imx51: uart4, uart5 gates only exist on imx50, imx53
Date: Thu, 21 Dec 2017 16:00:38 -0800 [thread overview]
Message-ID: <20171222000038.GI7997@codeaurora.org> (raw)
In-Reply-To: <20171213115748.14106-1-p.zabel@pengutronix.de>
On 12/13, Philipp Zabel wrote:
> i.MX51 only has 3 UARTs and no CCGR7 register. In place of the CCGR7
> register on i.MX50/i.MX53 that contains the ipg and per clock gates
> for UARTs 4 and 5, on i.MX51 there is the CMEOR register.
>
> Without this patch, the code disabling the UART clocks would also clear
> the mod_en_ov_vpu bit in the CMEOR register, among others, which causes
> register accesses to the VPU to lock up the system.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> ---
Applied to clk-next
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2017-12-22 0:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-13 11:57 [PATCH] clk: imx51: uart4, uart5 gates only exist on imx50, imx53 Philipp Zabel
2017-12-13 11:57 ` Philipp Zabel
2017-12-13 12:10 ` Fabio Estevam
2017-12-13 12:10 ` Fabio Estevam
2017-12-22 0:00 ` Stephen Boyd [this message]
2017-12-22 0:00 ` Stephen Boyd
-- strict thread matches above, loose matches on Subject: below --
2018-03-15 12:43 Patrick Brünn
2018-03-15 12:43 ` Patrick Brünn
2018-03-15 12:51 ` Fabio Estevam
2018-03-15 12:51 ` Fabio Estevam
2018-03-15 12:51 ` Fabio Estevam
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