mirror of https://gitee.com/openkylin/linux.git
Second Round of Renesas ARM Based SoC Updates for v3.20
* Add DT support for PM domains -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJUuIP9AAoJENfPZGlqN0++1YgP/jvxSCgTr9incpvoEeXsG7Pd /EK0N15UBfJFlhy5oiTrjyCnrPqfqlT1cz39GTUy6s/4UpgjuXRr8lhbpaJrSH2g N62EOv89rAChiGtxHwS4sXPvQPjcOIeQEsaq1C9W3IBx88bKpUQU9nbJtbuCbwUX eSmsk9mJH+mZapNd+xo7Ksnq7Fjovx/ja+ZNu+1V8IIXOXKnnuv7SiV1ATU9pE+a Bkrgjjw7zLof78xbtx2FInWj6vLGayqu3vAWt0zncXZBdoOuigavUjY275XYZ9eK zdZwBW/UFecsopVDw653OnRAewuv+iWGKutJbEgK+Y5uT2wg4Q59/sp8E3fyKDwv DNaopIJx9NhVNQZNMTT4/y3cV2xSNZqgBXfYt1EFDu01c1UIOXX+RGmI0RHgGoRL eD8DZmT6z0iCF0Fn6rSZouFrUqghnUXWtrm4IkzNKTpsSoB+o5FfwG6b/wF0JHfw til1Tx//lAChLMbUpNSIG88ng/4yF+UugRK0xoUVGyCMXLQaXhPRCd9EUb0rr5aN Ac9rRrqU4anQsTSQewUkT7hyuBUfZSRZBk6eZ5ZBR+JvPZl637vUPHdfJauBr2/h zv4uFjHdSUgoJCSVz35t65dYtDIvwKd9CcoCcuw+piYvq5K5ZmaSDnWl0f2YemdC D38+hZiXwERwd+Vtad1N =MA/A -----END PGP SIGNATURE----- Merge tag 'renesas-soc2-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc Merge "Second Round of Renesas ARM Based SoC Updates for v3.20" from Simon Horman: * Add DT support for PM domains * tag 'renesas-soc2-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: R-Mobile: Add DT support for PM domains ARM: shmobile: R-Mobile: Store SYSC base address in rmobile_pm_domain ARM: shmobile: R-Mobile: Use generic_pm_domain.attach_dev() for pm_clk setup Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson
commit
a71596933c
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@ -7,6 +7,7 @@ config PM_RCAR
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config PM_RMOBILE
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bool
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select PM_GENERIC_DOMAINS
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config ARCH_RCAR_GEN1
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bool
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@ -23,7 +24,7 @@ config ARCH_RCAR_GEN2
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config ARCH_RMOBILE
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bool
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select PM_RMOBILE if PM && !ARCH_SHMOBILE_MULTI
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select PM_RMOBILE if PM
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select SYS_SUPPORTS_SH_CMT
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select SYS_SUPPORTS_SH_TMU
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@ -9,10 +9,14 @@
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* for more details.
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*/
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#include <linux/console.h>
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#include <linux/io.h>
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#include <linux/suspend.h>
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#include "common.h"
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#include "pm-rmobile.h"
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#define SYSC_BASE IOMEM(0xe6180000)
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#if defined(CONFIG_PM) && !defined(CONFIG_ARCH_MULTIPLATFORM)
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static int r8a7740_pd_a3sm_suspend(void)
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{
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@ -45,41 +49,51 @@ static int r8a7740_pd_d4_suspend(void)
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static struct rmobile_pm_domain r8a7740_pm_domains[] = {
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{
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.genpd.name = "A4LC",
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.base = SYSC_BASE,
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.bit_shift = 1,
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}, {
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.genpd.name = "A4MP",
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.base = SYSC_BASE,
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.bit_shift = 2,
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}, {
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.genpd.name = "D4",
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.base = SYSC_BASE,
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.bit_shift = 3,
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.gov = &pm_domain_always_on_gov,
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.suspend = r8a7740_pd_d4_suspend,
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}, {
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.genpd.name = "A4R",
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.base = SYSC_BASE,
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.bit_shift = 5,
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}, {
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.genpd.name = "A3RV",
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.base = SYSC_BASE,
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.bit_shift = 6,
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}, {
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.genpd.name = "A4S",
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.base = SYSC_BASE,
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.bit_shift = 10,
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.no_debug = true,
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}, {
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.genpd.name = "A3SP",
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.base = SYSC_BASE,
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.bit_shift = 11,
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.gov = &pm_domain_always_on_gov,
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.no_debug = true,
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.suspend = r8a7740_pd_a3sp_suspend,
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}, {
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.genpd.name = "A3SM",
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.base = SYSC_BASE,
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.bit_shift = 12,
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.gov = &pm_domain_always_on_gov,
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.suspend = r8a7740_pd_a3sm_suspend,
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}, {
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.genpd.name = "A3SG",
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.base = SYSC_BASE,
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.bit_shift = 13,
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}, {
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.genpd.name = "A4SU",
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.base = SYSC_BASE,
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.bit_shift = 20,
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},
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};
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@ -3,6 +3,7 @@
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*
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* Copyright (C) 2012 Renesas Solutions Corp.
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* Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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* Copyright (C) 2014 Glider bvba
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*
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* based on pm-sh7372.c
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* Copyright (C) 2011 Magnus Damm
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@ -13,16 +14,22 @@
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*/
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/pm_clock.h>
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#include <linux/slab.h>
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#include <asm/io.h>
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#include "pm-rmobile.h"
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/* SYSC */
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#define SPDCR IOMEM(0xe6180008)
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#define SWUCR IOMEM(0xe6180014)
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#define PSTR IOMEM(0xe6180080)
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#define SPDCR 0x08 /* SYS Power Down Control Register */
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#define SWUCR 0x14 /* SYS Wakeup Control Register */
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#define PSTR 0x80 /* Power Status Register */
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#define PSTR_RETRIES 100
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#define PSTR_DELAY_US 10
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@ -30,8 +37,12 @@
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static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
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{
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struct rmobile_pm_domain *rmobile_pd = to_rmobile_pd(genpd);
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unsigned int mask = 1 << rmobile_pd->bit_shift;
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unsigned int mask;
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if (rmobile_pd->bit_shift == ~0)
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return -EBUSY;
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mask = 1 << rmobile_pd->bit_shift;
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if (rmobile_pd->suspend) {
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int ret = rmobile_pd->suspend();
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@ -39,12 +50,12 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
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return ret;
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}
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if (__raw_readl(PSTR) & mask) {
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if (__raw_readl(rmobile_pd->base + PSTR) & mask) {
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unsigned int retry_count;
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__raw_writel(mask, SPDCR);
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__raw_writel(mask, rmobile_pd->base + SPDCR);
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for (retry_count = PSTR_RETRIES; retry_count; retry_count--) {
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if (!(__raw_readl(SPDCR) & mask))
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if (!(__raw_readl(rmobile_pd->base + SPDCR) & mask))
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break;
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cpu_relax();
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}
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@ -52,7 +63,8 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
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if (!rmobile_pd->no_debug)
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pr_debug("%s: Power off, 0x%08x -> PSTR = 0x%08x\n",
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genpd->name, mask, __raw_readl(PSTR));
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genpd->name, mask,
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__raw_readl(rmobile_pd->base + PSTR));
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return 0;
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}
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@ -60,17 +72,21 @@ static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
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static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
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bool do_resume)
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{
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unsigned int mask = 1 << rmobile_pd->bit_shift;
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unsigned int mask;
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unsigned int retry_count;
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int ret = 0;
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if (__raw_readl(PSTR) & mask)
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if (rmobile_pd->bit_shift == ~0)
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return 0;
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mask = 1 << rmobile_pd->bit_shift;
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if (__raw_readl(rmobile_pd->base + PSTR) & mask)
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goto out;
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__raw_writel(mask, SWUCR);
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__raw_writel(mask, rmobile_pd->base + SWUCR);
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for (retry_count = 2 * PSTR_RETRIES; retry_count; retry_count--) {
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if (!(__raw_readl(SWUCR) & mask))
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if (!(__raw_readl(rmobile_pd->base + SWUCR) & mask))
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break;
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if (retry_count > PSTR_RETRIES)
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udelay(PSTR_DELAY_US);
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@ -82,7 +98,8 @@ static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
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if (!rmobile_pd->no_debug)
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pr_debug("%s: Power on, 0x%08x -> PSTR = 0x%08x\n",
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rmobile_pd->genpd.name, mask, __raw_readl(PSTR));
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rmobile_pd->genpd.name, mask,
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__raw_readl(rmobile_pd->base + PSTR));
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out:
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if (ret == 0 && rmobile_pd->resume && do_resume)
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@ -101,6 +118,36 @@ static bool rmobile_pd_active_wakeup(struct device *dev)
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return true;
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}
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static int rmobile_pd_attach_dev(struct generic_pm_domain *domain,
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struct device *dev)
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{
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int error;
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error = pm_clk_create(dev);
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if (error) {
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dev_err(dev, "pm_clk_create failed %d\n", error);
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return error;
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}
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error = pm_clk_add(dev, NULL);
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if (error) {
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dev_err(dev, "pm_clk_add failed %d\n", error);
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goto fail;
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}
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return 0;
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fail:
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pm_clk_destroy(dev);
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return error;
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}
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static void rmobile_pd_detach_dev(struct generic_pm_domain *domain,
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struct device *dev)
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{
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pm_clk_destroy(dev);
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}
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static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
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{
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struct generic_pm_domain *genpd = &rmobile_pd->genpd;
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@ -111,9 +158,13 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
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genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup;
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genpd->power_off = rmobile_pd_power_down;
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genpd->power_on = rmobile_pd_power_up;
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genpd->attach_dev = rmobile_pd_attach_dev;
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genpd->detach_dev = rmobile_pd_detach_dev;
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__rmobile_pd_power_up(rmobile_pd, false);
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}
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#ifdef CONFIG_ARCH_SHMOBILE_LEGACY
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void rmobile_init_domains(struct rmobile_pm_domain domains[], int num)
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{
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int j;
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@ -129,8 +180,6 @@ void rmobile_add_device_to_domain_td(const char *domain_name,
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struct device *dev = &pdev->dev;
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__pm_genpd_name_add_device(domain_name, dev, td);
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if (pm_clk_no_clocks(dev))
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pm_clk_add(dev, NULL);
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}
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void rmobile_add_devices_to_domains(struct pm_domain_device data[],
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@ -148,3 +197,199 @@ void rmobile_add_devices_to_domains(struct pm_domain_device data[],
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rmobile_add_device_to_domain_td(data[j].domain_name,
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data[j].pdev, &latencies);
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}
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#else /* !CONFIG_ARCH_SHMOBILE_LEGACY */
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static int rmobile_pd_suspend_cpu(void)
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{
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/*
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* This domain contains the CPU core and therefore it should
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* only be turned off if the CPU is not in use.
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*/
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return -EBUSY;
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}
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static int rmobile_pd_suspend_console(void)
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{
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/*
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* Serial consoles make use of SCIF hardware located in this domain,
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* hence keep the power domain on if "no_console_suspend" is set.
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*/
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return console_suspend_enabled ? 0 : -EBUSY;
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}
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static int rmobile_pd_suspend_debug(void)
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{
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/*
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* This domain contains the Coresight-ETM hardware block and
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* therefore it should only be turned off if the debug module is
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* not in use.
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*/
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return -EBUSY;
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}
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#define MAX_NUM_CPU_PDS 8
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static unsigned int num_cpu_pds __initdata;
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static struct device_node *cpu_pds[MAX_NUM_CPU_PDS] __initdata;
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static struct device_node *console_pd __initdata;
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static struct device_node *debug_pd __initdata;
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static void __init get_special_pds(void)
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{
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struct device_node *np, *pd;
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unsigned int i;
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/* PM domains containing CPUs */
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for_each_node_by_type(np, "cpu") {
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pd = of_parse_phandle(np, "power-domains", 0);
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if (!pd)
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continue;
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for (i = 0; i < num_cpu_pds; i++)
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if (pd == cpu_pds[i])
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break;
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if (i < num_cpu_pds) {
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of_node_put(pd);
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continue;
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}
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if (num_cpu_pds == MAX_NUM_CPU_PDS) {
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pr_warn("Too many CPU PM domains\n");
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of_node_put(pd);
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continue;
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}
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cpu_pds[num_cpu_pds++] = pd;
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}
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/* PM domain containing console */
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if (of_stdout)
|
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console_pd = of_parse_phandle(of_stdout, "power-domains", 0);
|
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|
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/* PM domain containing Coresight-ETM */
|
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np = of_find_compatible_node(NULL, NULL, "arm,coresight-etm3x");
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if (np) {
|
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debug_pd = of_parse_phandle(np, "power-domains", 0);
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of_node_put(np);
|
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}
|
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}
|
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|
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static void __init put_special_pds(void)
|
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{
|
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unsigned int i;
|
||||
|
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for (i = 0; i < num_cpu_pds; i++)
|
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of_node_put(cpu_pds[i]);
|
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of_node_put(console_pd);
|
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of_node_put(debug_pd);
|
||||
}
|
||||
|
||||
static bool __init pd_contains_cpu(const struct device_node *pd)
|
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{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < num_cpu_pds; i++)
|
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if (pd == cpu_pds[i])
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static void __init rmobile_setup_pm_domain(struct device_node *np,
|
||||
struct rmobile_pm_domain *pd)
|
||||
{
|
||||
const char *name = pd->genpd.name;
|
||||
|
||||
if (pd_contains_cpu(np)) {
|
||||
pr_debug("PM domain %s contains CPU\n", name);
|
||||
pd->gov = &pm_domain_always_on_gov;
|
||||
pd->suspend = rmobile_pd_suspend_cpu;
|
||||
} else if (np == console_pd) {
|
||||
pr_debug("PM domain %s contains serial console\n", name);
|
||||
pd->gov = &pm_domain_always_on_gov;
|
||||
pd->suspend = rmobile_pd_suspend_console;
|
||||
} else if (np == debug_pd) {
|
||||
pr_debug("PM domain %s contains Coresight-ETM\n", name);
|
||||
pd->gov = &pm_domain_always_on_gov;
|
||||
pd->suspend = rmobile_pd_suspend_debug;
|
||||
}
|
||||
|
||||
rmobile_init_pm_domain(pd);
|
||||
}
|
||||
|
||||
static int __init rmobile_add_pm_domains(void __iomem *base,
|
||||
struct device_node *parent,
|
||||
struct generic_pm_domain *genpd_parent)
|
||||
{
|
||||
struct device_node *np;
|
||||
|
||||
for_each_child_of_node(parent, np) {
|
||||
struct rmobile_pm_domain *pd;
|
||||
u32 idx = ~0;
|
||||
|
||||
if (of_property_read_u32(np, "reg", &idx)) {
|
||||
/* always-on domain */
|
||||
}
|
||||
|
||||
pd = kzalloc(sizeof(*pd), GFP_KERNEL);
|
||||
if (!pd)
|
||||
return -ENOMEM;
|
||||
|
||||
pd->genpd.name = np->name;
|
||||
pd->base = base;
|
||||
pd->bit_shift = idx;
|
||||
|
||||
rmobile_setup_pm_domain(np, pd);
|
||||
if (genpd_parent)
|
||||
pm_genpd_add_subdomain(genpd_parent, &pd->genpd);
|
||||
of_genpd_add_provider_simple(np, &pd->genpd);
|
||||
|
||||
rmobile_add_pm_domains(base, np, &pd->genpd);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init rmobile_init_pm_domains(void)
|
||||
{
|
||||
struct device_node *np, *pmd;
|
||||
bool scanned = false;
|
||||
void __iomem *base;
|
||||
int ret = 0;
|
||||
|
||||
for_each_compatible_node(np, NULL, "renesas,sysc-rmobile") {
|
||||
base = of_iomap(np, 0);
|
||||
if (!base) {
|
||||
pr_warn("%s cannot map reg 0\n", np->full_name);
|
||||
continue;
|
||||
}
|
||||
|
||||
pmd = of_get_child_by_name(np, "pm-domains");
|
||||
if (!pmd) {
|
||||
pr_warn("%s lacks pm-domains node\n", np->full_name);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!scanned) {
|
||||
/* Find PM domains containing special blocks */
|
||||
get_special_pds();
|
||||
scanned = true;
|
||||
}
|
||||
|
||||
ret = rmobile_add_pm_domains(base, pmd, NULL);
|
||||
of_node_put(pmd);
|
||||
if (ret) {
|
||||
of_node_put(np);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
put_special_pds();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
core_initcall(rmobile_init_pm_domains);
|
||||
|
||||
#endif /* !CONFIG_ARCH_SHMOBILE_LEGACY */
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@ struct rmobile_pm_domain {
|
|||
struct dev_power_governor *gov;
|
||||
int (*suspend)(void);
|
||||
void (*resume)(void);
|
||||
void __iomem *base;
|
||||
unsigned int bit_shift;
|
||||
bool no_debug;
|
||||
};
|
||||
|
|
@ -36,7 +37,7 @@ struct pm_domain_device {
|
|||
struct platform_device *pdev;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_PM_RMOBILE
|
||||
#if defined(CONFIG_PM_RMOBILE) && defined(CONFIG_ARCH_SHMOBILE_LEGACY)
|
||||
extern void rmobile_init_domains(struct rmobile_pm_domain domains[], int num);
|
||||
extern void rmobile_add_device_to_domain_td(const char *domain_name,
|
||||
struct platform_device *pdev,
|
||||
|
|
|
|||
|
|
@ -45,6 +45,8 @@
|
|||
#define PLLC01STPCR IOMEM(0xe61500c8)
|
||||
|
||||
/* SYSC */
|
||||
#define SYSC_BASE IOMEM(0xe6180000)
|
||||
|
||||
#define SBAR IOMEM(0xe6180020)
|
||||
#define WUPRMSK IOMEM(0xe6180028)
|
||||
#define WUPSMSK IOMEM(0xe618002c)
|
||||
|
|
@ -118,24 +120,28 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
|
|||
.genpd.name = "A4LC",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 1,
|
||||
},
|
||||
{
|
||||
.genpd.name = "A4MP",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 2,
|
||||
},
|
||||
{
|
||||
.genpd.name = "D4",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 3,
|
||||
},
|
||||
{
|
||||
.genpd.name = "A4R",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 5,
|
||||
.suspend = sh7372_a4r_pd_suspend,
|
||||
.resume = sh7372_intcs_resume,
|
||||
|
|
@ -144,18 +150,21 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
|
|||
.genpd.name = "A3RV",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 6,
|
||||
},
|
||||
{
|
||||
.genpd.name = "A3RI",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 8,
|
||||
},
|
||||
{
|
||||
.genpd.name = "A4S",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 10,
|
||||
.gov = &pm_domain_always_on_gov,
|
||||
.no_debug = true,
|
||||
|
|
@ -166,6 +175,7 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
|
|||
.genpd.name = "A3SP",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 11,
|
||||
.gov = &pm_domain_always_on_gov,
|
||||
.no_debug = true,
|
||||
|
|
@ -175,6 +185,7 @@ static struct rmobile_pm_domain sh7372_pm_domains[] = {
|
|||
.genpd.name = "A3SG",
|
||||
.genpd.power_on_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.genpd.power_off_latency_ns = PM_DOMAIN_ON_OFF_LATENCY_NS,
|
||||
.base = SYSC_BASE,
|
||||
.bit_shift = 13,
|
||||
},
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue