Hello, sending this RFC series out as a follow up of "[PATCH 0/3] Renesas RZ PFC and GPIO driver" patch series. This RFC patches extend the RZ series PFC driver to support selection of pins IO mode. [1/3] extends the existing register settings to set all configured peripherals groups in direct I/O mode, with input buffer and bi-direction control disabled. As I have not been able to extensively test the functionalities enabled by the original driver version, I cannot tell if this is a proper bug-fix, but according to HW manual, there are few use cases for non-direct IO mode and none of them is currently part of PFC enabled groups. As reported by [2/3] commit message, the original driver did not allowed selection of IO mode though PIPC, PIBC, PBDC and PM registers. While this has not apparently been an issue for the peripherals enabled by the above mentioned patch series, the ability to select a different IO mode is required for some peripherals, according to v3.14 Renesas' BSP (https://github.com/renesas-rz/linux-3.14/) Unfortunately, extending the existing PFC driver to allow this, results in a un-desired multiplication of possible function selector marks. The last patch enables LVDS, which is a use case for selection of a non-direct I/O mode. Chris, as you have plans to work on LVDS enablement for Renesas' BSP, if you have any time to test this settings and provide some feedback I would really appreciate that :) Thanks j Jacopo Mondi (3): pinctrl: sh-pfc: r7s72100: Enable DIO mode pinctrl: sh-pfc: r7s72100: IO mode selection pinctrl: sh-pfc: r7s72100: Add LVDS pin group drivers/pinctrl/sh-pfc/pfc-r7s72100.c | 137 +++++++++++++++++++++++++++++----- 1 file changed, 118 insertions(+), 19 deletions(-) -- 2.7.4
