Hello Peng, Am 01.08.2019 um 10:45 schrieb Peng Fan:
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....@nxp.com> --- V2: Fix build for aarch64 drivers/i2c/mxc_i2c.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 23119cce65..7a259547bd 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -18,6 +18,7 @@ #include <asm/arch/imx-regs.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> @@ -740,6 +741,14 @@ void bus_i2c_init(int index, int speed, int unused, return; }+ if (IS_ENABLED(CONFIG_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 @@ -885,6 +894,14 @@ static int mxc_i2c_probe(struct udevice *bus) if (addr == FDT_ADDR_T_NONE) return -EINVAL;+ if (IS_ENABLED(CONFIG_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;
Reviewed-by: Heiko Schocher <h...@denx.de> bye, Heiko -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-52 Fax: +49-8142-66989-80 Email: h...@denx.de _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
