All of lore.kernel.org
 help / color / mirror / Atom feed
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 v2 20/24] ARM: at91: pm: add backup mode support for SAMA7G5
Date: Fri, 9 Apr 2021 14:13:41 +0300	[thread overview]
Message-ID: <20210409111345.294472-21-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <20210409111345.294472-1-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


WARNING: multiple messages have this Message-ID (diff)
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 v2 20/24] ARM: at91: pm: add backup mode support for SAMA7G5
Date: Fri, 9 Apr 2021 14:13:41 +0300	[thread overview]
Message-ID: <20210409111345.294472-21-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <20210409111345.294472-1-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


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-04-09 11:18 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-09 11:13 [PATCH v2 00/24] ARM: at91: pm: add support for sama7g5 Claudiu Beznea
2021-04-09 11:13 ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 01/24] ARM: at91: pm: move pm_bu to soc_pm data structure Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 02/24] ARM: at91: pm: move the setup of soc_pm.bu->suspended Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 03/24] ARM: at91: pm: document at91_soc_pm structure Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 04/24] ARM: at91: pm: check for different controllers in at91_pm_modes_init() Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 05/24] ARM: at91: pm: do not initialize pdev Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 06/24] ARM: at91: pm: use r7 instead of tmp1 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 07/24] ARM: at91: pm: avoid push and pop on stack while memory is in self-refersh Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 08/24] ARM: at91: pm: s/CONFIG_SOC_SAM9X60/CONFIG_HAVE_AT91_SAM9X60_PLL/g Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 09/24] ARM: at91: pm: add support for waiting MCK1..4 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 10/24] ARM: at91: sfrbu: add sfrbu registers definitions for sama7g5 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 11/24] ARM: at91: ddr: add registers definitions for sama7g5's ddr Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 12/24] ARM: at91: pm: add self-refresh support for sama7g5 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 13/24] ARM: at91: pm: add support for MCK1..4 save/restore for ulp modes Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 14/24] ARM: at91: pm: add support for 2.5V LDO regulator control Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 15/24] ARM: at91: pm: wait for ddr power mode off Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 16/24] dt-bindings: atmel-sysreg: add bindings for sama7g5 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-12 16:02   ` Rob Herring
2021-04-12 16:02     ` Rob Herring
2021-04-15  7:31     ` Claudiu.Beznea
2021-04-15  7:31       ` Claudiu.Beznea
2021-04-09 11:13 ` [PATCH v2 17/24] ARM: at91: pm: add sama7g5 ddr controller Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 18/24] ARM: at91: pm: add sama7g5 ddr phy controller Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 19/24] ARM: at91: pm: save ddr phy calibration data to securam Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` Claudiu Beznea [this message]
2021-04-09 11:13   ` [PATCH v2 20/24] ARM: at91: pm: add backup mode support for SAMA7G5 Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 21/24] ARM: at91: pm: add sama7g5's pmc Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 22/24] ARM: at91: sama7: introduce sama7 SoC family Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 23/24] ARM: at91: pm: add pm support for SAMA7G5 Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea
2021-04-09 11:13 ` [PATCH v2 24/24] ARM: at91: pm: add sama7g5 shdwc Claudiu Beznea
2021-04-09 11:13   ` Claudiu Beznea

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210409111345.294472-21-claudiu.beznea@microchip.com \
    --to=claudiu.beznea@microchip.com \
    --cc=alexandre.belloni@bootlin.com \
    --cc=devicetree@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=ludovic.desroches@microchip.com \
    --cc=nicolas.ferre@microchip.com \
    --cc=robh+dt@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.