From: Krzysztof Kozlowski <krzk@kernel.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 0/9] arm: exynos: Fix reboot on Odroid HC1
Date: Wed, 13 Feb 2019 17:46:39 +0100 [thread overview]
Message-ID: <20190213164648.26579-1-krzk@kernel.org> (raw)
Hi,
Changes since v1
================
1. Move fixes to beginning of patchset.
2. Patch 3: Rework the idea - split revision detection to be executed later.
3. Patch 4: New patch.
4. Patch 6: Apply Simon's comments.
5. Patch 6: Do not delay when changing voltage if regulator is disabled.
6. Patch 6: Do not delay when disabling the regulator.
Description
===========
Odroid HC1 does not reboot properly (at least from SD card but
I do not expect difference on eMMC), if LDO4/VDD_ADC was turned
off by Linux kernel. This condition happens so far always, because
Linux kernel did not enable ADC on Odroid HC1, therefore the
VDD_ADC regulator was turned off as unused.
The issue is in detection of revision which later is used to load
proper DTB.
The revision is obtained by ADC read of a voltage depending on VDD_ADC.
Therefore:
1. VDD_ADC has to be turned on (but board detection happens before
power is initialized),
2. Turning VDD_ADC should wait with ramp delay,
3. Reading the value from ADC should wait for it to stabilize.
Tested on Odroid XU3-Lite and Odroid HC1.
Commends and testing are welcomed.
Best regards,
Krzysztof
Krzysztof Kozlowski (9):
adc: exynos-adc: Fix wrong bit operation used to stop the ADC
power: regulator: s2mps11: Fix step for LDO27 and LDO35
arm: exynos: Detect revision later, when all resources are ready
arm: exynos: odroid-xu3: Display info late to have proper type
arm: exynos: Wait till ADC stabilizes before checking Odroid HC1
revision
regulator: Add support for ramp delay
power: regulator: s2mps11: Add enable delay
arm: dts: exynos: Add supply for ADC block to Odroid XU3 family
arm: dts: exynos: Add ramp delay property to LDO regulators to Odroid
XU3 family
arch/arm/dts/exynos5422-odroidxu3.dts | 20 +++++++
board/samsung/common/board.c | 15 ++++-
board/samsung/common/exynos5-dt-types.c | 58 +++++++++++++++++--
board/samsung/odroid/odroid.c | 8 +++
configs/odroid-xu3_defconfig | 2 +
.../regulator/regulator.txt | 2 +
drivers/adc/exynos-adc.c | 2 +-
drivers/power/regulator/regulator-uclass.c | 47 ++++++++++++++-
drivers/power/regulator/s2mps11_regulator.c | 13 ++++-
include/power/regulator.h | 2 +
include/samsung/misc.h | 1 +
11 files changed, 160 insertions(+), 10 deletions(-)
--
2.17.1
next reply other threads:[~2019-02-13 16:46 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-13 16:46 Krzysztof Kozlowski [this message]
2019-02-13 16:46 ` [U-Boot] [PATCH v2 1/9] adc: exynos-adc: Fix wrong bit operation used to stop the ADC Krzysztof Kozlowski
2019-02-15 6:54 ` Lukasz Majewski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 2/9] power: regulator: s2mps11: Fix step for LDO27 and LDO35 Krzysztof Kozlowski
2019-02-15 6:55 ` Lukasz Majewski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 3/9] arm: exynos: Detect revision later, when all resources are ready Krzysztof Kozlowski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 4/9] arm: exynos: odroid-xu3: Display info late to have proper type Krzysztof Kozlowski
2019-02-14 7:37 ` Krzysztof Kozlowski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 5/9] arm: exynos: Wait till ADC stabilizes before checking Odroid HC1 revision Krzysztof Kozlowski
2019-02-15 7:15 ` Lukasz Majewski
2019-02-15 10:06 ` Krzysztof Kozlowski
2019-02-16 9:28 ` Krzysztof Kozlowski
2019-02-17 22:31 ` Lukasz Majewski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 6/9] regulator: Add support for ramp delay Krzysztof Kozlowski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 7/9] power: regulator: s2mps11: Add enable delay Krzysztof Kozlowski
2019-02-15 7:03 ` Lukasz Majewski
2019-02-15 10:11 ` Krzysztof Kozlowski
2019-02-15 10:55 ` Lukasz Majewski
2019-02-15 17:11 ` Simon Glass
2019-02-16 8:37 ` Krzysztof Kozlowski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 8/9] arm: dts: exynos: Add supply for ADC block to Odroid XU3 family Krzysztof Kozlowski
2019-02-15 7:01 ` Lukasz Majewski
2019-02-13 16:46 ` [U-Boot] [PATCH v2 9/9] arm: dts: exynos: Add ramp delay property to LDO regulators " Krzysztof Kozlowski
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