My last submission attempted to work around serial driver coexistence
problems on multiplatform kernels. Since there are still questions
surrounding the best way to solve that problem, this patch series
will focus on the narrower topic of big endian MMIO support on serial.
V2->V3:
- Document the new DT properties.
- Add libfdt-based wrapper, to complement the "struct device_node" based
version.
- Restructure early_init_dt_scan_chosen_serial() changes to use a
temporary variable, so it is easy to add more of_setup_earlycon()
properties later.
- Make of_serial and serial8250 honor the new "big-endian" property.
This series applies cleanly to:
git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux.git
devicetree/next-overlay
but was tested on the mips-for-linux-next branch because my BE platform
isn't supported in mainline yet.
Kevin Cernekee (7):
of: Add helper function to check MMIO register endianness
of/fdt: Add endianness helper function for early init code
of: Document {little,big,native}-endian bindings
serial: core: Add big-endian iotype
serial: earlycon: Set UPIO_MEM32BE based on DT properties
serial: of_serial: Support big-endian register accesses
serial: 8250: Add support for big-endian MMIO accesses
.../devicetree/bindings/common-properties.txt | 60 ++++++++++++++++++++++
drivers/of/base.c | 23 +++++++++
drivers/of/fdt.c | 26 +++++++++-
drivers/tty/serial/8250/8250_core.c | 20 ++++++++
drivers/tty/serial/8250/8250_early.c | 5 ++
drivers/tty/serial/earlycon.c | 4 +-
drivers/tty/serial/of_serial.c | 3 +-
drivers/tty/serial/serial_core.c | 2 +
include/linux/of.h | 6 +++
include/linux/of_fdt.h | 2 +
include/linux/serial_core.h | 15 +++---
11 files changed, 155 insertions(+), 11 deletions(-)
create mode 100644 Documentation/devicetree/bindings/common-properties.txt
--
2.1.0
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