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| author | Peng Fan <peng.fan@nxp.com> | 2020-05-01 22:08:35 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2020-05-10 13:21:20 +0200 |
| commit | 7d1ee741d1367172eaf92c554ebf56b9cba13504 (patch) | |
| tree | 3ac4bc9b8b33f82d10ff20b6eea52fe15bef5f2a /drivers/i2c | |
| parent | 3c42c0f6734601540bd2be5e83ca12e05079222a (diff) | |
| download | u-boot-7d1ee741d1367172eaf92c554ebf56b9cba13504.zip u-boot-7d1ee741d1367172eaf92c554ebf56b9cba13504.tar.gz u-boot-7d1ee741d1367172eaf92c554ebf56b9cba13504.tar.bz2 | |
i2c: mxc: add fuse check
Add fuse check for I2C. If the fuse indicates the module
will not work in the SoC, let's fail the initialization.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index a03c465..4d6e0e3 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -19,6 +19,7 @@ #include <dm/device_compat.h> #include <linux/errno.h> #include <asm/mach-imx/mxc_i2c.h> +#include <asm/mach-imx/sys_proto.h> #include <asm/io.h> #include <i2c.h> #include <watchdog.h> @@ -747,6 +748,14 @@ void bus_i2c_init(int index, int speed, int unused, return; } + if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) { + if (i2c_fused((ulong)mxc_i2c_buses[index].base)) { + printf("SoC fuse indicates I2C@0x%lx is unavailable.\n", + (ulong)mxc_i2c_buses[index].base); + return; + } + } + /* * Warning: Be careful to allow the assignment to a static * variable here. This function could be called while U-Boot is @@ -892,6 +901,14 @@ static int mxc_i2c_probe(struct udevice *bus) if (addr == FDT_ADDR_T_NONE) return -EINVAL; + if (CONFIG_IS_ENABLED(IMX_MODULE_FUSE)) { + if (i2c_fused((ulong)addr)) { + printf("SoC fuse indicates I2C@0x%lx is unavailable.\n", + (ulong)addr); + return -ENODEV; + } + } + i2c_bus->base = addr; i2c_bus->index = bus->seq; i2c_bus->bus = bus; |