From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Date: Mon, 14 Apr 2014 18:33:11 +0000 Subject: [PATCH v2 0/6] ARM: shmobile: Add rcar-gpio clock support Message-Id: <1397500397-12607-1-git-send-email-geert@linux-m68k.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org This series adds support to control the MSTP clocks of the GPIO blocks on R-Car Gen2 SoCs. Currently we depend on reset state / the bootloader to have the right clocks enabled. If they're not enabled, GPIO will fail, but not crash: - No heartbeat LED (if you had it enabled), - Keypad switches don't work, - System doesn't wake-up from suspend when pressing a keypad switch. After applying this series, the MSTP clocks of the GPIO blocks will be enabled automatically by runtime PM (or statically, if CONFIG_PM_RUNTIME=n) during boot up. - [1/6] gpio: rcar: Add optional functional clock to bindings - [2/6] gpio: rcar: Add minimal runtime PM support - [3/6] ARM: shmobile: r8a7790 dtsi: Add GPIO clocks - [4/6] ARM: shmobile: r8a7791 dtsi: Add GPIO clocks - [5/6] ARM: shmobile: r8a7790 legacy: Add GPIO clocks - [6/6] ARM: shmobile: r8a7791 legacy: Add GPIO clocks For legacy, this should work as-is. For multiplatform, this needs a method to enable drivers/sh/pm_runtime.c to actually work. This was tested on r8a7791/Koelsch, both legacy and multiplatform. The changes for r8a7790 were straight-forward. R-Car Gen1 doesn't seem to be affected, at least the r8a7778 datasheet doesn't mention MSTP bits for GPIO modules. Thanks for applying! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds