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power: reset: augment versatile driver for integrator
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 <dbaryshkov@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Sebastian Reichel <sre@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
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parent
06efe0e540
commit
0160817d10
1 changed files with 29 additions and 3 deletions
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@ -15,14 +15,21 @@
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#include <linux/of.h>
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#include <asm/system_misc.h>
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#define INTEGRATOR_HDR_CTRL_OFFSET 0x0C
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#define INTEGRATOR_HDR_LOCK_OFFSET 0x14
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#define INTEGRATOR_CM_CTRL_RESET (1 << 3)
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#define REALVIEW_SYS_LOCK_OFFSET 0x20
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#define REALVIEW_SYS_LOCK_VAL 0xA05F
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#define REALVIEW_SYS_RESETCTL_OFFSET 0x40
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/* Magic unlocking token used on all Versatile boards */
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#define VERSATILE_LOCK_VAL 0xA05F
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/*
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* We detect the different syscon types from the compatible strings.
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*/
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enum versatile_reboot {
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INTEGRATOR_REBOOT_CM,
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REALVIEW_REBOOT_EB,
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REALVIEW_REBOOT_PB1176,
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REALVIEW_REBOOT_PB11MP,
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@ -35,6 +42,10 @@ static struct regmap *syscon_regmap;
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static enum versatile_reboot versatile_reboot_type;
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static const struct of_device_id versatile_reboot_of_match[] = {
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{
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.compatible = "arm,core-module-integrator",
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.data = (void *)INTEGRATOR_REBOOT_CM
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},
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{
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.compatible = "arm,realview-eb-syscon",
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.data = (void *)REALVIEW_REBOOT_EB,
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@ -55,31 +66,46 @@ static const struct of_device_id versatile_reboot_of_match[] = {
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.compatible = "arm,realview-pbx-syscon",
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.data = (void *)REALVIEW_REBOOT_PBX,
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},
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{},
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};
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static void versatile_reboot(enum reboot_mode mode, const char *cmd)
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{
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/* Unlock the reset register */
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regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
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REALVIEW_SYS_LOCK_VAL);
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/* Then hit reset on the different machines */
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switch (versatile_reboot_type) {
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case INTEGRATOR_REBOOT_CM:
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regmap_write(syscon_regmap, INTEGRATOR_HDR_LOCK_OFFSET,
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VERSATILE_LOCK_VAL);
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regmap_update_bits(syscon_regmap,
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INTEGRATOR_HDR_CTRL_OFFSET,
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INTEGRATOR_CM_CTRL_RESET,
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INTEGRATOR_CM_CTRL_RESET);
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break;
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case REALVIEW_REBOOT_EB:
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regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
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VERSATILE_LOCK_VAL);
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regmap_write(syscon_regmap,
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REALVIEW_SYS_RESETCTL_OFFSET, 0x0008);
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break;
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case REALVIEW_REBOOT_PB1176:
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regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
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VERSATILE_LOCK_VAL);
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regmap_write(syscon_regmap,
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REALVIEW_SYS_RESETCTL_OFFSET, 0x0100);
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break;
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case REALVIEW_REBOOT_PB11MP:
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case REALVIEW_REBOOT_PBA8:
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regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
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VERSATILE_LOCK_VAL);
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regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
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0x0000);
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regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
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0x0004);
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break;
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case REALVIEW_REBOOT_PBX:
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regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
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VERSATILE_LOCK_VAL);
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regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
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0x00f0);
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regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
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