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Subject[PATCH v2 RESEND 10/11] mtd: st_spi_fsm: Provide mask to obtain correct boot device pins
Date
From: Christophe Kerello <christophe.kerello@st.com>

This patch adds a mask to be able to get the right boot device selection.

For example:
for STiH415, value = SYSTEM_STATUS398[4:0]
for STiH416, value = SYSTEM_STATUS2598[4:0]
for STiH407, value = SYSTEM_STATUS5561[6:2]

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/mtd/devices/st_spi_fsm.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 18f6f0b..f992f00 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -2123,6 +2123,7 @@ static void stfsm_fetch_platform_configs(struct platform_device *pdev)
struct regmap *regmap;
uint32_t boot_device_reg;
uint32_t boot_device_spi;
+ uint32_t boot_device_msk;
uint32_t boot_device; /* Value we read from *boot_device_reg */
int ret;

@@ -2147,10 +2148,17 @@ static void stfsm_fetch_platform_configs(struct platform_device *pdev)
if (ret)
goto boot_device_fail;

+ /* Mask to apply on boot_device_reg */
+ ret = of_property_read_u32(np, "st,boot-device-msk", &boot_device_msk);
+ if (ret)
+ goto boot_device_fail;
+
ret = regmap_read(regmap, boot_device_reg, &boot_device);
if (ret)
goto boot_device_fail;

+ boot_device &= boot_device_msk;
+
if (boot_device != boot_device_spi)
fsm->booted_from_spi = false;

--
1.9.1


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