From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Date: Thu, 27 Mar 2014 20:47:35 +0000 Subject: [PATCH 0/7] ARM: shmobile: Add rcar-gpio clock support Message-Id: <1395953262-4290-1-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 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. [1/7] gpio: rcar: Add helper variable dev = &pdev->dev [2/7] gpio: rcar: Add optional functional clock to bindings [3/7] gpio: rcar: Add minimal runtime PM support [4/7] ARM: shmobile: r8a7790 dtsi: Add GPIO clocks [5/7] ARM: shmobile: r8a7791 dtsi: Add GPIO clocks [6/7] ARM: shmobile: r8a7790 legacy: Add GPIO clocks [7/7] ARM: shmobile: r8a7791 legacy: Add GPIO clocks For multiplatform, this depends on the series "[PATCH 0/5] ARM: shmobile: Enable drivers/sh/pm_runtime.c on multi-platform" (or any other method to enable drivers/sh/pm_runtime.c) to actually work. For legacy, this slightly conflicts with that series, as sh_pm_runtime_init() will be called too late to actually work. However, it should be safe to apply this series, even without the prerequisites. This was tested on r8a7791/Koelsch, both legacy and multiplatform. The changes for r8a7790 were straight-forward. Similar changes will have to be made for r8a7778 and r8a7779, but I don't have datasheets for those. Thanks! 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