linux-kernel - [PATCH v3 1/2] spi: rockchip: Set GPIO_SS flag to enable Slave Select with GPIO CS

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Message-Id: <1498624723-17332-1-git-send-email-jeffy.chen@rock-chips.com>
Date:   Wed, 28 Jun 2017 12:38:42 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org, broonie@...nel.org
Cc:     briannorris@...omium.org, dianders@...omium.org, heiko@...ech.de,
        Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-spi@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v3 1/2] spi: rockchip: Set GPIO_SS flag to enable Slave Select with GPIO CS

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)) {
-- 
2.1.4