Get the spi_master's bus_num from DTS to make the spi_master's name
static. So "mtdparts=spi.bus_num.chip_select:..." in cmdline can be
used to asign mtd partions of spi flash.
Signed-off-by: Hou Zhiqiang <B48286@xxxxxxxxxxxxx>
---
drivers/spi/spi-fsl-lib.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/spi/spi-fsl-lib.c b/drivers/spi/spi-fsl-lib.c
index 0b75f26..f5f0307b 100644
--- a/drivers/spi/spi-fsl-lib.c
+++ b/drivers/spi/spi-fsl-lib.c
@@ -198,7 +198,7 @@ int of_mpc8xxx_spi_probe(struct platform_device *ofdev)
struct mpc8xxx_spi_probe_info *pinfo;
struct fsl_spi_platform_data *pdata;
const void *prop;
- int ret = -ENOMEM;
+ int ret = -ENOMEM, bus_num;
pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
if (!pinfo)
@@ -207,8 +207,12 @@ int of_mpc8xxx_spi_probe(struct platform_device *ofdev)
pdata = &pinfo->pdata;
dev->platform_data = pdata;
- /* Allocate bus num dynamically. */
- pdata->bus_num = -1;
+ ret = of_property_read_u32(np, "bus-num", &bus_num);
+ if (ret < 0) {
+ /* Allocate bus num dynamically. */
+ bus_num = -1;
+ }
+ pdata->bus_num = bus_num;
#ifdef CONFIG_FSL_SOC
/* SPI controller is either clocked from QE or SoC clock. */
--
1.8.5
--
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