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| author | Paul Burton <paul.burton@imgtec.com> | 2016-08-26 15:17:35 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-10-05 01:31:20 +0200 |
| commit | c11e3b48dbc367e38dfaea6e8a61d3b39f476685 (patch) | |
| tree | 206ec739e07875e5cb77a71fe2fed8b9a7cbcba9 /arch/mips/configs | |
| parent | b6d5e47e67292542a41c3fe367bacb364eb4e601 (diff) | |
| download | linux-c11e3b48dbc367e38dfaea6e8a61d3b39f476685.tar.bz2 | |
MIPS: SEAD3: Probe UARTs using DT
Probe the UARTs on SEAD3 boards using device tree rather than platform
code, in order to reduce the amount of the latter. This requires that
CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig.
The SEAD3 DT shim code is extended to read bootloader environment
variables to determine the appropriate UART & mode for kernel console
output & set the stdout-path property of the chosen node accordingly.
In contrast to the old platform code, which appears to have only ever
set "console=ttyS0,38400n8r" with the code in console_config never
having an effect, this will honor the "yamontty" environment variable to
select between the 2 UARTs on the board and then check the "modetty0" or
"modetty1" variable as appropriate to determine the UART configuration.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/configs')
| -rw-r--r-- | arch/mips/configs/sead3_defconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/configs/sead3_defconfig b/arch/mips/configs/sead3_defconfig index dae9354b6256..deb48fb77d1f 100644 --- a/arch/mips/configs/sead3_defconfig +++ b/arch/mips/configs/sead3_defconfig @@ -39,6 +39,7 @@ CONFIG_MTD_CFI_INTELEXT=y CONFIG_MTD_PHYSMAP=y CONFIG_MTD_UBI=y CONFIG_MTD_UBI_GLUEBI=y +CONFIG_OF=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_CRYPTOLOOP=m CONFIG_SCSI=y @@ -70,6 +71,7 @@ CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_NR_UARTS=2 CONFIG_SERIAL_8250_RUNTIME_UARTS=2 +CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set CONFIG_I2C=y # CONFIG_I2C_COMPAT is not set |