diff mbox

[RFC,2/2] spi: zynqmp: gqspi: add support for stacked mode configuration

Message ID 1436445895-25504-3-git-send-email-ranjit.waghmode@xilinx.com
State Superseded
Headers show

Commit Message

Ranjit Waghmode July 9, 2015, 12:44 p.m. UTC 
This patch adds support of stacked mode configuration for
Zynq Ultrascale+ MPSoC GQSPI controller driver.

Signed-off-by: Ranjit Waghmode <ranjit.waghmode@xilinx.com>
---
 drivers/spi/spi-zynqmp-gqspi.c | 4 ++++
 1 file changed, 4 insertions(+)

--
2.1.2

Comments

Mark Brown July 14, 2015, 4:28 p.m. UTC | #1 
On Thu, Jul 09, 2015 at 06:14:55PM +0530, Ranjit Waghmode wrote:
> This patch adds support of stacked mode configuration for
> Zynq Ultrascale+ MPSoC GQSPI controller driver.

> +	} else if (qspi->master->flags & SPI_MASTER_U_PAGE) {

Same here, there's no definition of SPI_MASTER_U_PAGE.  It doesn't sound
very generic but I'm not entirely sure what "stacked mode" is.
diff mbox

Patch

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 271fa80..6c9f7d9 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -410,6 +410,10 @@  static void zynqmp_qspi_chipselect(struct spi_device *qspi, bool is_high)
 		zynqmp_gqspi_selectslave(xqspi,
 				GQSPI_SELECT_FLASH_CS_BOTH,
 				GQSPI_SELECT_FLASH_BUS_BOTH);
+	} else if (qspi->master->flags & SPI_MASTER_U_PAGE) {
+		zynqmp_gqspi_selectflash(xqspi,
+				GQSPI_SELECT_FLASH_CS_UPPER,
+				GQSPI_SELECT_FLASH_BUS_LOWER);
 	} else {
 		zynqmp_gqspi_selectslave(xqspi,
 				GQSPI_SELECT_FLASH_CS_LOWER,