From: shawnguo@kernel.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/8] tty: serial: fsl_lpuart: support suspend/resume
Date: Sat, 11 Jun 2016 22:03:41 +0800 [thread overview]
Message-ID: <20160611140341.GT20243@tiger> (raw)
In-Reply-To: <20160609151039.20817-3-bhuvanchandra.dv@toradex.com>
On Thu, Jun 09, 2016 at 08:40:33PM +0530, Bhuvanchandra DV wrote:
> From: Stefan Agner <stefan@agner.ch>
>
> In order to allow wake support in STOP sleep mode, clocks are
> needed. Use imx_clk_gate2_cgr to disable automatic clock gating
> in low power mode STOP. This allows to enable wake by UART using:
> echo enabled > /sys/class/tty/ttyLP0/power/wakeup
>
> However, if wake is not enabled, the driver should disable the
> clocks explicitly to save power.
>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> ---
> drivers/clk/imx/clk-vf610.c | 12 ++++++------
Please send clock driver changes in a separate patch.
Shawn
> drivers/tty/serial/fsl_lpuart.c | 16 ++++++++++++++--
> 2 files changed, 20 insertions(+), 8 deletions(-)
next prev parent reply other threads:[~2016-06-11 14:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-09 15:10 [PATCH 0/8] Improve Rx/Tx DMA implementation Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 1/8] tty: serial: fsl_lpuart: consider TX FIFO too in tx_empty Bhuvanchandra DV
2016-06-25 21:26 ` Greg KH
2016-06-28 3:54 ` Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 2/8] tty: serial: fsl_lpuart: support suspend/resume Bhuvanchandra DV
2016-06-11 14:03 ` Shawn Guo [this message]
2016-06-14 0:18 ` Bhhuvanchandra DV
2016-06-14 2:42 ` Stefan Agner
2016-06-21 0:11 ` Stephen Boyd
2016-06-09 15:10 ` [PATCH 3/8] tty: serial: fsl_lpuart: fix clearing of receive flag Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 4/8] tty: serial: fsl_lpuart: Fix broken 8m/s1 support Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 5/8] tty: serial: fsl-lpuart: Use cyclic DMA for Rx Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 6/8] tty: serial: fsl-lpuart: Use scatter/gather DMA for Tx Drop PIO to DMA switching and use scatter/gather DMA for Tx path to improve performance Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 7/8] tty: serial: fsl-lpuart: Update suspend/resume for DMA mode Bhuvanchandra DV
2016-06-09 15:10 ` [PATCH 8/8] tty: serial: fsl_lpuart: Add support for RS-485 Bhuvanchandra DV
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