u-boot-brain/arch/arm
Krzysztof Kozlowski ae781d56fe arm: dts: exynos: Add ramp delay property to LDO regulators to Odroid XU3 family
Add startup time to LDO regulators of S2MPS11 PMIC on Odroid XU3/XU4/HC1
family of boards to be sure the voltage is proper before relying on the
regulator.

The datasheet for all the S2MPS1x family is inconsistent here and does
not specify unambiguously the value of ramp delay for LDO.  It mentions
30 mV/us in one timing diagram but then omits it completely in LDO
regulator characteristics table (it is specified for bucks).

However the vendor kernels for Galaxy S5 and Odroid XU3 use values of 12
mV/us or 24 mV/us.

Without the ramp delay value the consumers do not wait for voltage
settle after changing it.  Although the proper value of ramp delay for
LDOs is unknown, it seems safer to use at least some value from
reference kernel than to leave it unset.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2019-03-11 15:53:19 +09:00
..
cpu armv8: fsl-layerscape: fix SEC QI ICID setup 2019-03-03 22:01:09 +05:30
dts arm: dts: exynos: Add ramp delay property to LDO regulators to Odroid XU3 family 2019-03-11 15:53:19 +09:00
include armv8: fsl-layerscape: avoid DT fixup warning 2019-03-03 22:01:14 +05:30
lib ARM: cache: Fix incorrect bitwise operation 2019-02-28 14:21:46 -05:00
mach-aspeed regmap: change regmap_init_mem() to take ofnode instead udevice 2018-05-07 15:49:51 -04:00
mach-at91 linker: Modify linker scripts to be more generic 2019-01-26 22:55:53 -05:00
mach-bcm283x arm: Kconfig: spelling fixes 2019-01-18 09:16:15 -05:00
mach-bcmstb board: arm: Add support for Broadcom BCM7260 2018-09-10 21:19:31 -04:00
mach-davinci driver: net: consolidate ti's code in separate folder 2018-11-05 10:41:59 -06:00
mach-exynos samsung: mmc: Drop old MMC init code 2019-02-09 12:50:22 -07:00
mach-highbank SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
mach-imx imx: cpu.c: give access to reset cause in spl 2019-02-15 22:01:15 +01:00
mach-integrator env: Convert CONFIG_ENV_IS_IN... to a choice 2017-08-15 20:50:01 -04:00
mach-k3 arm: mach-k3: common: Clean up ATF image startup function 2019-02-09 07:51:02 -05:00
mach-keystone ti: remove usage of DM_I2C_COMPAT and don't disable DM_I2C in SPL 2018-12-10 07:15:21 +01:00
mach-kirkwood Convert CONFIG_MII et al to Kconfig 2018-08-17 13:03:54 -04:00
mach-mediatek mt7629: use linux kernel compatible SMP initialization 2018-12-26 21:35:53 -05:00
mach-meson arm: meson: board-gx: Setup VPU in fdt 2019-01-31 09:35:01 +01:00
mach-mvebu video: Armada XP: Move driver to DM_VIDEO 2019-02-05 14:23:21 +01:00
mach-omap2 usb: Rename SPL_USB_SUPPORT to SPL_USB_STORAGE 2019-02-15 22:01:15 +01:00
mach-orion5x arm: remove prototype for get_timer_masked 2018-10-10 13:35:09 -04:00
mach-owl board: Add uCRobotics Bubblegum-96 board support 2018-07-09 15:25:23 -04:00
mach-qemu Kconfig: Sort bool, default, select and imply options 2018-07-30 07:18:48 -04:00
mach-rmobile ARM: rmobile: Imply SoC per board 2019-02-25 16:07:41 +01:00
mach-rockchip rockchip: rk3399: spl: ensure that debug_uart_init is called 2019-02-01 16:59:14 +01:00
mach-s5pc1xx exynos: Convert to use CONFIG_BLK 2019-02-09 12:50:21 -07:00
mach-snapdragon arm: mach-snapdragon: pinctrl: clarify gpio disable bit 2019-01-25 12:12:56 -05:00
mach-socfpga ARM: socfpga: Clear PL310 early in SPL 2019-02-25 16:07:36 +01:00
mach-sti board: Add STMicroelectronics STiH410-B2260 support 2017-03-14 20:40:21 -04:00
mach-stm32 mach-stm32: Set MPU SDRAM size to 512MB for STM32F7/H7 2018-10-06 14:09:41 -04:00
mach-stm32mp arm: stm32mp1: deploy spl in root folder 2019-01-29 09:41:37 -05:00
mach-sunxi arm: sunxi: Enable DM_MMC 2019-01-30 18:22:18 +05:30
mach-tegra arm64: zynqmp: Move SoC sources to mach-zynqmp 2019-01-24 10:03:44 +01:00
mach-uniphier ARM: uniphier: do not modify bootcmd environment variable at run-time 2018-12-29 11:38:33 +09:00
mach-versal arm64: versal: Move IOU_SWITCH_DIVISOR0 to Kconfig 2019-02-14 14:31:10 +01:00
mach-versatile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
mach-zynq ARM: zynq: Remove addresses for i2c controllers 2019-02-14 14:31:10 +01:00
mach-zynqmp arm64: zynqmp: Fix logic around CONFIG_ZYNQ_SDHCI 2019-02-14 14:31:10 +01:00
mach-zynqmp-r5 arm: zynqmp: Add ZynqMP minimal R5 support 2018-05-11 09:38:23 +02:00
thumb1/include/asm/proc-armv SPDX: Convert a few files that were missed before 2018-05-10 20:38:35 -04:00
config.mk efi_loader: Rename sections to allow for implicit data 2018-07-25 14:57:44 +02:00
Kconfig configs: fsl: move DDR specific defines to Kconfig 2019-03-03 20:56:01 +05:30
Kconfig.debug arm: debug: add Kconfig entries for lowlevel debug 2014-10-26 22:23:12 +01:00
Makefile arm: imx: build mach-imx for i.MX8 2019-01-28 20:35:47 +01:00