tty: serial: OMAP: work around broken driver, IP block
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| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA modedrivers/ | +31 | 2 replies | |
| 2/2 | tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chiparch/ drivers/ | +51 | 2 replies | |
| 2/2 | tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip | +0 | 0 replies |
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Cover letter [PATCH 0/2] tty: serial: OMAP: work around broken driver, IP block
[ This series is targeted for merging during v3.3-rc ]
On v3.3-rc1, the OMAP serial console doesn't behave properly when power management is enabled (the default with omap2plus_defconfig). This seems to be due to a combination of a silicon bug in the UART IP block and broken FIFO settings in the OMAP serial driver.
This patch series attempts to work around these problems. The workarounds are not perfect; see the patch descriptions for more details.
Tested on OMAP3530 BeagleBoard. This series will need to be tested on OMAP2 and OMAP4 before it is ready to merge.
- Paul
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Paul Walmsley (2):
tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode
tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip
arch/arm/plat-omap/include/plat/omap-serial.h | 1 drivers/tty/serial/omap-serial.c | 86 ++++++++++++++++++++++++- 2 files changed, 82 insertions(+), 5 deletions(-)