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author | Krzysztof Kozlowski <krzk@kernel.org> | 2019-03-14 21:02:17 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-22 08:18:21 +0200 |
commit | 113a78a0a537889f7353d8afe4c0978209425252 (patch) | |
tree | d5a4ae3276c2e33d2ce84650eac22b64dbcfc1cc /arch/score | |
parent | 78184953a2ed77abf47cd36e042dc51c7013f44a (diff) |
ARM: dts: exynos: Always enable necessary APIO_1V8 and ABB_1V8 regulators on Arndale Octa
[ Upstream commit 5ab99cf7d5e96e3b727c30e7a8524c976bd3723d ]
The PVDD_APIO_1V8 (LDO2) and PVDD_ABB_1V8 (LDO8) regulators were turned
off by Linux kernel as unused. However they supply critical parts of
SoC so they should be always on:
1. PVDD_APIO_1V8 supplies SYS pins (gpx[0-3], PSHOLD), HDMI level shift,
RTC, VDD1_12 (DRAM internal 1.8 V logic), pull-up for PMIC interrupt
lines, TTL/UARTR level shift, reset pins and SW-TACT1 button.
It also supplies unused blocks like VDDQ_SRAM (for SROM controller) and
VDDQ_GPIO (gpm7, gpy7).
The LDO2 cannot be turned off (S2MPS11 keeps it on anyway) so
marking it "always-on" only reflects its real status.
2. PVDD_ABB_1V8 supplies Adaptive Body Bias Generator for ARM cores,
memory and Mali (G3D).
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/score')
0 files changed, 0 insertions, 0 deletions