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285121 |
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04-Jul-2015 |
adrian |
Reshuffle all of the DDR flush operations into a single switch/mux, and start teaching subsystems about it.
The Atheros MIPS platforms don't guarantee any kind of FIFO consistency with interrupts in hardware. So software needs to do a flush when it receives an interrupt and before it calls the interrupt handler.
There are new ones for the QCA934x and QCA955x, so do a few things:
* Get rid of the individual ones (for ethernet and IP2); * Create a mux and enum listing all the variations on DDR flushes; * replace the uses of IP2 with the relevant one (which will typically be "PCI" here); * call the USB DDR flush before calling the real USB interrupt handlers; * call the ethernet one upon receiving an interrupt that's for us, rather than never calling it during operation.
Tested:
* QCA9558 (TP-Link archer c7 v2) * AR9331 (Carambola 2)
TODO:
* PCI, USB, ethernet, etc need to do a double-check to see if the interrupt was truely for them before doing the DDR. For now I prefer "correct" over "fast".
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276685 |
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05-Jan-2015 |
adrian |
Add initial Qualcomm Atheros QCA955x SoC support.
This adds the initial frequency poking and configures up enough for it to boot and spit out data over the console.
There's still a whole bunch of work to do in the reset path and devices to support this thing, but hey, it's alive!
ath> go 0x80050100 ## Starting application at 0x80050100 ... CPU platform: Atheros AR9558 rev 0 CPU Frequency=720 MHz CPU DDR Frequency=600 MHz CPU AHB Frequency=200 MHz platform frequency: 720 MHz CPU reference clock: 0 MHz CPU MDIO clock: 40 MHz
Done at: hackathon Obtained from: Linux OpenWRT, Qualcomm Atheros
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