All of lore.kernel.org
 help / color / mirror / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Alim Akhtar <alim.akhtar@samsung.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Sasha Levin <sashal@kernel.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 11/21] arm64: dts: exynos: Fix silent hang after boot on Espresso
Date: Sat,  8 Aug 2020 19:39:31 -0400	[thread overview]
Message-ID: <20200808233941.3619277-11-sashal@kernel.org> (raw)
In-Reply-To: <20200808233941.3619277-1-sashal@kernel.org>

From: Alim Akhtar <alim.akhtar@samsung.com>

[ Upstream commit b072714bfc0e42c984b8fd6e069f3ca17de8137a ]

Once regulators are disabled after kernel boot, on Espresso board silent
hang observed because of LDO7 being disabled.  LDO7 actually provide
power to CPU cores and non-cpu blocks circuitries.  Keep this regulator
always-on to fix this hang.

Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso")
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index 00dd89b92b427..d991eae5202f2 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -152,6 +152,7 @@ ldo7_reg: LDO7 {
 				regulator-min-microvolt = <700000>;
 				regulator-max-microvolt = <1150000>;
 				regulator-enable-ramp-delay = <125>;
+				regulator-always-on;
 			};
 
 			ldo8_reg: LDO8 {
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Alim Akhtar <alim.akhtar@samsung.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 4.19 11/21] arm64: dts: exynos: Fix silent hang after boot on Espresso
Date: Sat,  8 Aug 2020 19:39:31 -0400	[thread overview]
Message-ID: <20200808233941.3619277-11-sashal@kernel.org> (raw)
In-Reply-To: <20200808233941.3619277-1-sashal@kernel.org>

From: Alim Akhtar <alim.akhtar@samsung.com>

[ Upstream commit b072714bfc0e42c984b8fd6e069f3ca17de8137a ]

Once regulators are disabled after kernel boot, on Espresso board silent
hang observed because of LDO7 being disabled.  LDO7 actually provide
power to CPU cores and non-cpu blocks circuitries.  Keep this regulator
always-on to fix this hang.

Fixes: 9589f7721e16 ("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso")
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
index 00dd89b92b427..d991eae5202f2 100644
--- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts
@@ -152,6 +152,7 @@ ldo7_reg: LDO7 {
 				regulator-min-microvolt = <700000>;
 				regulator-max-microvolt = <1150000>;
 				regulator-enable-ramp-delay = <125>;
+				regulator-always-on;
 			};
 
 			ldo8_reg: LDO8 {
-- 
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:[~2020-08-08 23:39 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-08 23:39 [PATCH AUTOSEL 4.19 01/21] x86/mce/inject: Fix a wrong assignment of i_mce.status Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 02/21] sched/fair: Fix NOHZ next idle balance Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 03/21] sched: correct SD_flags returned by tl->sd_flags() Sasha Levin
     [not found] ` <20200808233941.3619277-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2020-08-08 23:39   ` [PATCH AUTOSEL 4.19 04/21] arm64: dts: rockchip: fix rk3368-lion gmac reset gpio Sasha Levin
2020-08-08 23:39     ` Sasha Levin
2020-08-08 23:39     ` Sasha Levin
2020-08-08 23:39   ` [PATCH AUTOSEL 4.19 05/21] arm64: dts: rockchip: fix rk3399-puma vcc5v0-host gpio Sasha Levin
2020-08-08 23:39     ` Sasha Levin
2020-08-08 23:39     ` Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 06/21] arm64: dts: rockchip: fix rk3399-puma gmac reset gpio Sasha Levin
2020-08-08 23:39   ` Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 07/21] EDAC: Fix reference count leaks Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 08/21] arm64: dts: qcom: msm8916: Replace invalid bias-pull-none property Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 09/21] crypto: ccree - fix resource leak on error path Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 10/21] firmware: arm_scmi: Fix SCMI genpd domain probing Sasha Levin
2020-08-08 23:39   ` Sasha Levin
2020-08-08 23:39 ` Sasha Levin [this message]
2020-08-08 23:39   ` [PATCH AUTOSEL 4.19 11/21] arm64: dts: exynos: Fix silent hang after boot on Espresso Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 12/21] clk: scmi: Fix min and max rate when registering clocks with discrete rates Sasha Levin
2020-08-08 23:39   ` Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 13/21] m68k: mac: Don't send IOP message until channel is idle Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 14/21] m68k: mac: Fix IOP status/control register writes Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 15/21] platform/x86: intel-hid: Fix return value check in check_acpi_dev() Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 16/21] platform/x86: intel-vbtn: " Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 17/21] ARM: dts: gose: Fix ports node name for adv7180 Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 18/21] ARM: dts: gose: Fix ports node name for adv7612 Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 19/21] ARM: at91: pm: add missing put_device() call in at91_pm_sram_init() Sasha Levin
2020-08-08 23:39   ` Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 20/21] spi: lantiq: fix: Rx overflow error in full duplex mode Sasha Levin
2020-08-08 23:39 ` [PATCH AUTOSEL 4.19 21/21] ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh() Sasha Levin
2020-08-08 23:39   ` Sasha Levin

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=20200808233941.3619277-11-sashal@kernel.org \
    --to=sashal@kernel.org \
    --cc=alim.akhtar@samsung.com \
    --cc=devicetree@vger.kernel.org \
    --cc=krzk@kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    --cc=stable@vger.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.