From: Axel Haslam <ahas...@baylibre.com> The purpose of this patch series is to add DT support and modernize the ohci-da8xx glue driver without breaking the non-DT boot, which is still used in unconverted davinci devices.
The first couple of patches, are the recent and ongoing efforts from David Lechner to clean up davinci-mach code and the ochi-da8xx driver, Im including these patches on this series for completeness sake. Then I re-based an old patch by Manjunath Goudar[4] to be able to build the driver as a module. We can now add this patch because we removed references to sysconf registers by using David's patches. Then I prepare the stage for a DT boot which does not depend on any mach-arch/* callbacks by using a regulator to handle the vbus and over current gpios. For this, i extended the fixed regulator driver to register for an irq and send a regulator notification if an over curent pin is specified. The only dependency left for this series is the recently re-posted patch by David to remove references to mach-code[1], which is approved and should be picked up soon. Note 1: Testing was done on a omap138-lcdk board, using DT, and non-DT boot, and checking that in both cases the hub, usb mass storage and an input device are correctly enumerated and working. The omap138-lcdk does not have gpios to control vbus and get over current interrupt notifications. If anyone has a da830-evm based board and could confirm that ohci is correctly working, i would appreciate it. (the OHCI option needs to be enabled in menuconfig) Note 2: It seems that the davinci-gpio driver is broken for DT based boot and any gpio > 32. (luckly none of the DT based boards use gpios yet) The issue is discussed here [2] Note 3: A git branch based on tag: next-20161021 with the dependencies is available in my github here [3]. [1] usb: ohci-da8xx: Remove code that references mach http://marc.info/?l=linux-kernel&m=147632744323084&w=4 [2] thread about invalid gpio in davinci http://www.gossamer-threads.com/lists/linux/kernel/2550178 [3] Git branch: https://github.com/axelhaslamx/linux-axel/commits/ohci-da8xx-dt-v2.1 [4] Separate ohci-da8xx driver patch https://patches.linaro.org/patch/18234/ Changes from v1->v2 * Rebased and added patch to make ohci a separate driver * Use a regulator instead of handling Gpios (David Lechner) * Add an overcurrent mode to regulator framework * Fixed regulator is able to register for and overcurrent irq * Added patch by Alexandre to remove build warnings * Moved global variables into private hcd structure. Alexandre Bailon (1): ARM: davinci: da8xx: Fix some redefined symbol warnings Axel Haslam (10): ARM: davinci: da8xx: Enable the usb20 "per" clk on phy_clk_enable ARM: davinci: hawk: add full constraints for ohci plat boot regulator: fixed: Add over current event USB: da8xx: use flag instead of bitmask for over current change USB: ochi-da8xx: Use a regulator for vbus/overcurrent USB: da8xx: use ohci priv data instead of globals ARM: davinci: register the usb20_phy clock on the DT file usb: host: ohci-da8xx: Add devicetree bindings documentation USB: ohci-da8xx: Allow probing from DT ARM: dts: da850: add usb device node David Lechner (5): ARM: davinci: da8xx: add usb phy clocks ARM: davinci: da8xx: Add CFGCHIP syscon platform declaration. ARM: davinci: da8xx: Add USB PHY platform declaration ARM: DTS: da850: Add cfgchip syscon node ARM: DTS: da850: Add usb phy node Manjunath Goudar (1): USB: OHCI: make ohci-da8xx a separate driver .../bindings/regulator/fixed-regulator.txt | 4 + .../devicetree/bindings/usb/ohci-da8xx.txt | 39 +++ arch/arm/boot/dts/da850-lcdk.dts | 8 + arch/arm/boot/dts/da850.dtsi | 17 + arch/arm/mach-davinci/board-da830-evm.c | 152 +++----- arch/arm/mach-davinci/board-da850-evm.c | 4 + arch/arm/mach-davinci/board-mityomapl138.c | 4 + arch/arm/mach-davinci/board-omapl138-hawk.c | 122 ++----- arch/arm/mach-davinci/da8xx-dt.c | 2 + arch/arm/mach-davinci/devices-da8xx.c | 28 ++ arch/arm/mach-davinci/include/mach/da8xx.h | 8 +- arch/arm/mach-davinci/usb-da8xx.c | 244 ++++++++++++- drivers/regulator/fixed.c | 64 ++++ drivers/usb/host/Kconfig | 2 +- drivers/usb/host/Makefile | 1 + drivers/usb/host/ohci-da8xx.c | 382 +++++++++++---------- drivers/usb/host/ohci-hcd.c | 18 - include/linux/platform_data/usb-davinci.h | 43 --- include/linux/regulator/consumer.h | 5 + include/linux/regulator/fixed.h | 3 + 20 files changed, 703 insertions(+), 447 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/ohci-da8xx.txt -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
