Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752846AbaKDLbZ (ORCPT ); Tue, 4 Nov 2014 06:31:25 -0500 Received: from mail-wg0-f52.google.com ([74.125.82.52]:54951 "EHLO mail-wg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750985AbaKDLbU (ORCPT ); Tue, 4 Nov 2014 06:31:20 -0500 From: Linus Walleij To: Sebastian Reichel , Dmitry Eremin-Solenikov , linux-kernel@vger.kernel.org Cc: David Woodhouse , Linus Walleij Subject: [PATCH] power: reset: augment versatile driver for integrator Date: Tue, 4 Nov 2014 12:31:12 +0100 Message-Id: <1415100672-31425-1-git-send-email-linus.walleij@linaro.org> X-Mailer: git-send-email 1.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Augment the Versatile reset driver to also handle the core module reset sequence used on the Integrator/AP and Integrator/CP. Cc: Dmitry Eremin-Solenikov Cc: David Woodhouse Cc: Sebastian Reichel Signed-off-by: Linus Walleij --- Sebastian: please merge this into your power tree if you're OK with it, the corresponding platform changes are orthogonal so these can go separately through the ARM SoC tree. --- drivers/power/reset/arm-versatile-reboot.c | 32 +++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) diff --git a/drivers/power/reset/arm-versatile-reboot.c b/drivers/power/reset/arm-versatile-reboot.c index 5b08bffcf1a8..adea9d0c38e0 100644 --- a/drivers/power/reset/arm-versatile-reboot.c +++ b/drivers/power/reset/arm-versatile-reboot.c @@ -15,14 +15,21 @@ #include #include +#define INTEGRATOR_HDR_CTRL_OFFSET 0x0C +#define INTEGRATOR_HDR_LOCK_OFFSET 0x14 +#define INTEGRATOR_CM_CTRL_RESET (1 << 3) + #define REALVIEW_SYS_LOCK_OFFSET 0x20 -#define REALVIEW_SYS_LOCK_VAL 0xA05F #define REALVIEW_SYS_RESETCTL_OFFSET 0x40 +/* Magic unlocking token used on all Versatile boards */ +#define VERSATILE_LOCK_VAL 0xA05F + /* * We detect the different syscon types from the compatible strings. */ enum versatile_reboot { + INTEGRATOR_REBOOT_CM, REALVIEW_REBOOT_EB, REALVIEW_REBOOT_PB1176, REALVIEW_REBOOT_PB11MP, @@ -36,6 +43,10 @@ static enum versatile_reboot versatile_reboot_type; static const struct of_device_id versatile_reboot_of_match[] = { { + .compatible = "arm,core-module-integrator", + .data = (void *)INTEGRATOR_REBOOT_CM + }, + { .compatible = "arm,realview-eb-syscon", .data = (void *)REALVIEW_REBOOT_EB, }, @@ -55,31 +66,46 @@ static const struct of_device_id versatile_reboot_of_match[] = { .compatible = "arm,realview-pbx-syscon", .data = (void *)REALVIEW_REBOOT_PBX, }, + {}, }; static void versatile_reboot(enum reboot_mode mode, const char *cmd) { /* Unlock the reset register */ - regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET, - REALVIEW_SYS_LOCK_VAL); /* Then hit reset on the different machines */ switch (versatile_reboot_type) { + case INTEGRATOR_REBOOT_CM: + regmap_write(syscon_regmap, INTEGRATOR_HDR_LOCK_OFFSET, + VERSATILE_LOCK_VAL); + regmap_update_bits(syscon_regmap, + INTEGRATOR_HDR_CTRL_OFFSET, + INTEGRATOR_CM_CTRL_RESET, + INTEGRATOR_CM_CTRL_RESET); + break; case REALVIEW_REBOOT_EB: + regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET, + VERSATILE_LOCK_VAL); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, 0x0008); break; case REALVIEW_REBOOT_PB1176: + regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET, + VERSATILE_LOCK_VAL); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, 0x0100); break; case REALVIEW_REBOOT_PB11MP: case REALVIEW_REBOOT_PBA8: + regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET, + VERSATILE_LOCK_VAL); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, 0x0000); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, 0x0004); break; case REALVIEW_REBOOT_PBX: + regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET, + VERSATILE_LOCK_VAL); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, 0x00f0); regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET, -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/