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Diffstat (limited to 'arch/arm/mach-imx/pm-imx6.c')
-rw-r--r--arch/arm/mach-imx/pm-imx6.c95
1 files changed, 74 insertions, 21 deletions
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
index ecdf071653d4..a671ca498f88 100644
--- a/arch/arm/mach-imx/pm-imx6.c
+++ b/arch/arm/mach-imx/pm-imx6.c
@@ -1,25 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2011-2014 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
*/
+#include <linux/clk/imx.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/genalloc.h>
+#include <linux/irqchip/arm-gic.h>
#include <linux/mfd/syscon.h>
#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/suspend.h>
#include <asm/cacheflush.h>
@@ -130,6 +127,13 @@ static const u32 imx6sl_mmdc_io_offset[] __initconst = {
0x330, 0x334, 0x320, /* SDCKE0, SDCKE1, RESET */
};
+static const u32 imx6sll_mmdc_io_offset[] __initconst = {
+ 0x294, 0x298, 0x29c, 0x2a0, /* DQM0 ~ DQM3 */
+ 0x544, 0x54c, 0x554, 0x558, /* GPR_B0DS ~ GPR_B3DS */
+ 0x530, 0x540, 0x2ac, 0x52c, /* MODE_CTL, MODE, SDCLK_0, GPR_ADDDS */
+ 0x2a4, 0x2a8, /* SDCKE0, SDCKE1*/
+};
+
static const u32 imx6sx_mmdc_io_offset[] __initconst = {
0x2ec, 0x2f0, 0x2f4, 0x2f8, /* DQM0 ~ DQM3 */
0x60c, 0x610, 0x61c, 0x620, /* GPR_B0DS ~ GPR_B3DS */
@@ -175,6 +179,16 @@ static const struct imx6_pm_socdata imx6sl_pm_data __initconst = {
.mmdc_io_offset = imx6sl_mmdc_io_offset,
};
+static const struct imx6_pm_socdata imx6sll_pm_data __initconst = {
+ .mmdc_compat = "fsl,imx6sll-mmdc",
+ .src_compat = "fsl,imx6sll-src",
+ .iomuxc_compat = "fsl,imx6sll-iomuxc",
+ .gpc_compat = "fsl,imx6sll-gpc",
+ .pl310_compat = "arm,pl310-cache",
+ .mmdc_io_num = ARRAY_SIZE(imx6sll_mmdc_io_offset),
+ .mmdc_io_offset = imx6sll_mmdc_io_offset,
+};
+
static const struct imx6_pm_socdata imx6sx_pm_data __initconst = {
.mmdc_compat = "fsl,imx6sx-mmdc",
.src_compat = "fsl,imx6sx-src",
@@ -296,7 +310,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode)
if (cpu_is_imx6sl())
val |= BM_CLPCR_BYPASS_PMIC_READY;
if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul() ||
- cpu_is_imx6ull())
+ cpu_is_imx6ull() || cpu_is_imx6sll() || cpu_is_imx6ulz())
val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
else
val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
@@ -314,7 +328,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode)
if (cpu_is_imx6sl() || cpu_is_imx6sx())
val |= BM_CLPCR_BYPASS_PMIC_READY;
if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6ul() ||
- cpu_is_imx6ull())
+ cpu_is_imx6ull() || cpu_is_imx6sll() || cpu_is_imx6ulz())
val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
else
val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
@@ -337,9 +351,11 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode)
*
* Note that IRQ #32 is GIC SPI #0.
*/
- imx_gpc_hwirq_unmask(0);
+ if (mode != WAIT_CLOCKED)
+ imx_gpc_hwirq_unmask(0);
writel_relaxed(val, ccm_base + CLPCR);
- imx_gpc_hwirq_mask(0);
+ if (mode != WAIT_CLOCKED)
+ imx_gpc_hwirq_mask(0);
return 0;
}
@@ -428,10 +444,8 @@ static int __init imx6_pm_get_base(struct imx6_pm_base *base,
int ret = 0;
node = of_find_compatible_node(NULL, NULL, compat);
- if (!node) {
- ret = -ENODEV;
- goto out;
- }
+ if (!node)
+ return -ENODEV;
ret = of_address_to_resource(node, 0, &res);
if (ret)
@@ -444,7 +458,6 @@ static int __init imx6_pm_get_base(struct imx6_pm_base *base,
put_node:
of_node_put(node);
-out:
return ret;
}
@@ -483,14 +496,14 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
if (!ocram_pool) {
pr_warn("%s: ocram pool unavailable!\n", __func__);
ret = -ENODEV;
- goto put_node;
+ goto put_device;
}
ocram_base = gen_pool_alloc(ocram_pool, MX6Q_SUSPEND_OCRAM_SIZE);
if (!ocram_base) {
pr_warn("%s: unable to alloc ocram!\n", __func__);
ret = -ENOMEM;
- goto put_node;
+ goto put_device;
}
ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base);
@@ -513,7 +526,7 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
ret = imx6_pm_get_base(&pm_info->mmdc_base, socdata->mmdc_compat);
if (ret) {
pr_warn("%s: failed to get mmdc base %d!\n", __func__, ret);
- goto put_node;
+ goto put_device;
}
ret = imx6_pm_get_base(&pm_info->src_base, socdata->src_compat);
@@ -560,7 +573,9 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
&imx6_suspend,
MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info));
- goto put_node;
+ __arm_iomem_set_ro(suspend_ocram_base, MX6Q_SUSPEND_OCRAM_SIZE);
+
+ goto put_device;
pl310_cache_map_failed:
iounmap(pm_info->gpc_base.vbase);
@@ -570,6 +585,8 @@ iomuxc_map_failed:
iounmap(pm_info->src_base.vbase);
src_map_failed:
iounmap(pm_info->mmdc_base.vbase);
+put_device:
+ put_device(&pdev->dev);
put_node:
of_node_put(node);
@@ -604,6 +621,27 @@ static void __init imx6_pm_common_init(const struct imx6_pm_socdata
IMX6Q_GPR1_GINT);
}
+static void imx6_pm_stby_poweroff(void)
+{
+ gic_cpu_if_down(0);
+ imx6_set_lpm(STOP_POWER_OFF);
+ imx6q_suspend_finish(0);
+
+ mdelay(1000);
+
+ pr_emerg("Unable to poweroff system\n");
+}
+
+static int imx6_pm_stby_poweroff_probe(void)
+{
+ if (register_platform_power_off(imx6_pm_stby_poweroff)) {
+ pr_warn("%s: platform power off already claimed!\n", __func__);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
void __init imx6_pm_ccm_init(const char *ccm_compat)
{
struct device_node *np;
@@ -620,6 +658,11 @@ void __init imx6_pm_ccm_init(const char *ccm_compat)
val = readl_relaxed(ccm_base + CLPCR);
val &= ~BM_CLPCR_LPM;
writel_relaxed(val, ccm_base + CLPCR);
+
+ if (of_property_read_bool(np, "fsl,pmic-stby-poweroff"))
+ imx6_pm_stby_poweroff_probe();
+
+ of_node_put(np);
}
void __init imx6q_pm_init(void)
@@ -634,7 +677,17 @@ void __init imx6dl_pm_init(void)
void __init imx6sl_pm_init(void)
{
- imx6_pm_common_init(&imx6sl_pm_data);
+ struct regmap *gpr;
+
+ if (cpu_is_imx6sl()) {
+ imx6_pm_common_init(&imx6sl_pm_data);
+ } else {
+ imx6_pm_common_init(&imx6sll_pm_data);
+ gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+ if (!IS_ERR(gpr))
+ regmap_update_bits(gpr, IOMUXC_GPR5,
+ IMX6SLL_GPR5_AFCG_X_BYPASS_MASK, 0);
+ }
}
void __init imx6sx_pm_init(void)
generated by cgit (git 2.34.1) at 2025-12-25 13:56:53 +0000