From: Claudiu Beznea <claudiu.beznea@microchip.com>
To: <nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
<ludovic.desroches@microchip.com>, <robh+dt@kernel.org>,
<linux@armlinux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Claudiu Beznea <claudiu.beznea@microchip.com>
Subject: [PATCH v3 20/24] ARM: at91: pm: add backup mode support for SAMA7G5
Date: Thu, 15 Apr 2021 13:50:06 +0300 [thread overview]
Message-ID: <20210415105010.569620-21-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <20210415105010.569620-1-claudiu.beznea@microchip.com>
Adapt at91_pm_backup_init() to work for SAMA7G5. Also, set the LPM pin
to shutdown controller. This will signal to PMIC that it needs to switch
to the state corresponding to backup mode.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
arch/arm/mach-at91/pm.c | 3 ++-
arch/arm/mach-at91/pm_suspend.S | 7 +++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 91b4014d2e10..fcb20272d65d 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -729,7 +729,8 @@ static int __init at91_pm_backup_init(void)
struct platform_device *pdev;
int ret = -ENODEV, located = 0;
- if (!IS_ENABLED(CONFIG_SOC_SAMA5D2))
+ if (!IS_ENABLED(CONFIG_SOC_SAMA5D2) &&
+ !IS_ENABLED(CONFIG_SOC_SAMA7G5))
return -EPERM;
if (!at91_is_pm_mode_active(AT91_PM_BACKUP))
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index 7396e18dd7e5..cbd61a3bcab1 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -106,6 +106,12 @@ lp_done_\ena:
#endif
.endm
+ .macro at91_backup_set_lpm reg
+#ifdef CONFIG_SOC_SAMA7
+ orr \reg, \reg, #0x200000
+#endif
+ .endm
+
.text
.arm
@@ -989,6 +995,7 @@ ulp_exit:
ldr r0, .shdwc
mov tmp1, #0xA5000000
add tmp1, tmp1, #0x1
+ at91_backup_set_lpm tmp1
str tmp1, [r0, #0]
.endm
--
2.25.1
next prev parent reply other threads:[~2021-04-15 10:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 10:49 [PATCH v3 00/24] ARM: at91: pm: add support for sama7g5 Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 01/24] ARM: at91: pm: move pm_bu to soc_pm data structure Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 02/24] ARM: at91: pm: move the setup of soc_pm.bu->suspended Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 03/24] ARM: at91: pm: document at91_soc_pm structure Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 04/24] ARM: at91: pm: check for different controllers in at91_pm_modes_init() Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 05/24] ARM: at91: pm: do not initialize pdev Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 06/24] ARM: at91: pm: use r7 instead of tmp1 Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 07/24] ARM: at91: pm: avoid push and pop on stack while memory is in self-refersh Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 08/24] ARM: at91: pm: s/CONFIG_SOC_SAM9X60/CONFIG_HAVE_AT91_SAM9X60_PLL/g Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 09/24] ARM: at91: pm: add support for waiting MCK1..4 Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 10/24] ARM: at91: sfrbu: add sfrbu registers definitions for sama7g5 Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 11/24] ARM: at91: ddr: add registers definitions for sama7g5's ddr Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 12/24] ARM: at91: pm: add self-refresh support for sama7g5 Claudiu Beznea
2021-04-15 10:49 ` [PATCH v3 13/24] ARM: at91: pm: add support for MCK1..4 save/restore for ulp modes Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 14/24] ARM: at91: pm: add support for 2.5V LDO regulator control Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 15/24] ARM: at91: pm: wait for ddr power mode off Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 16/24] dt-bindings: atmel-sysreg: add bindings for sama7g5 Claudiu Beznea
2021-04-15 20:59 ` Rob Herring
2021-04-15 10:50 ` [PATCH v3 17/24] ARM: at91: pm: add sama7g5 ddr controller Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 18/24] ARM: at91: pm: add sama7g5 ddr phy controller Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 19/24] ARM: at91: pm: save ddr phy calibration data to securam Claudiu Beznea
2021-04-15 10:50 ` Claudiu Beznea [this message]
2021-04-15 10:50 ` [PATCH v3 21/24] ARM: at91: pm: add sama7g5's pmc Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 22/24] ARM: at91: sama7: introduce sama7 SoC family Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 23/24] ARM: at91: pm: add pm support for SAMA7G5 Claudiu Beznea
2021-04-15 10:50 ` [PATCH v3 24/24] ARM: at91: pm: add sama7g5 shdwc Claudiu Beznea
2021-07-16 18:03 ` [PATCH v3 00/24] ARM: at91: pm: add support for sama7g5 Nicolas Ferre
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