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Message-ID: <CAD=FV=V3_jntAn=qSzV-Lvs1qz5-EuWRNYT1=SsUuNqhHpsoJA@mail.gmail.com>
Date: Tue, 27 Jun 2017 22:38:41 -0700
From: Doug Anderson <dianders@...omium.org>
To: Jeffy Chen <jeffy.chen@...k-chips.com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"broonie@...nel.org" <broonie@...nel.org>,
Brian Norris <briannorris@...omium.org>,
Heiko Stübner <heiko@...ech.de>,
linux-spi <linux-spi@...r.kernel.org>,
"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 1/2] spi: rockchip: Set GPIO_SS flag to enable Slave
Select with GPIO CS
Hi,
On Tue, Jun 27, 2017 at 9:38 PM, Jeffy Chen <jeffy.chen@...k-chips.com> wrote:
> The rockchip spi still requires slave selection when using GPIO CS.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> ---
>
> Changes in v3: None
> Changes in v2: None
>
> drivers/spi/spi-rockchip.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
> index bab9b13..52ea160 100644
> --- a/drivers/spi/spi-rockchip.c
> +++ b/drivers/spi/spi-rockchip.c
> @@ -749,6 +749,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
> master->transfer_one = rockchip_spi_transfer_one;
> master->max_transfer_size = rockchip_spi_max_transfer_size;
> master->handle_err = rockchip_spi_handle_err;
> + master->flags = SPI_MASTER_GPIO_SS;
>
> rs->dma_tx.ch = dma_request_chan(rs->dev, "tx");
> if (IS_ERR(rs->dma_tx.ch)) {
Reviewed-by: Douglas Anderson <dianders@...omium.org>
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