Hi,
The main purpose of this patch series is to add coupled regulators for
Exynos5422/5800 to keep constrain on voltage difference between vdd_arm
and vdd_int to be at most 300mV. In exynos-bus instead of using
regulator_set_voltage_tol() with default voltage tolerance it should be
used regulator_set_voltage_triplet() with volatege range, and this is
already present in opp/core.c code, so it can be reused. While at this,
move setting regulators into opp/core.
This patchset was tested on Odroid XU3.
The DTS coupled regulators patch depends on 2nd and 3rd patches.
Changes:
v3:
- added new exynos-bus patch to correct clock and regulator enabling
and disabling sequence as suggested by Chanwoo Choi
- corrected error path in enable and improved commit message in opp/core
- improve comment in devfreq/exynos-bus.c before devfreq_recommended_opp()
- change cover letter as there is new patch
- added note before Signed-off-by in 4th patch
v2:
- improve regulators enable/disable code in opp/core as suggested by
Viresh Kumar
- add new patch for remove unused dt-bindings as suggested by Krzysztof
Kozlowski
Regards,
Kamil
Kamil Konieczny (4):
devfreq: exynos-bus: correct clock enable sequence
opp: core: add regulators enable and disable
devfreq: exynos-bus: convert to use dev_pm_opp_set_rate()
dt-bindings: devfreq: exynos-bus: remove unused property
Marek Szyprowski (1):
ARM: dts: exynos: add initial data for coupled regulators for
Exynos5422/5800
.../bindings/devfreq/exynos-bus.txt | 2 -
arch/arm/boot/dts/exynos5420.dtsi | 34 ++--
arch/arm/boot/dts/exynos5422-odroid-core.dtsi | 4 +
arch/arm/boot/dts/exynos5800-peach-pi.dts | 4 +
arch/arm/boot/dts/exynos5800.dtsi | 32 ++--
drivers/devfreq/exynos-bus.c | 181 ++++++------------
drivers/opp/core.c | 16 +-
7 files changed, 113 insertions(+), 160 deletions(-)
--
2.22.0
Remove unused DT property "exynos,voltage-tolerance".
Signed-off-by: Kamil Konieczny <[email protected]>
Acked-by: Chanwoo Choi <[email protected]>
---
Documentation/devicetree/bindings/devfreq/exynos-bus.txt | 2 --
1 file changed, 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
index f8e946471a58..e71f752cc18f 100644
--- a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
+++ b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
@@ -50,8 +50,6 @@ Required properties only for passive bus device:
Optional properties only for parent bus device:
- exynos,saturation-ratio: the percentage value which is used to calibrate
the performance count against total cycle count.
-- exynos,voltage-tolerance: the percentage value for bus voltage tolerance
- which is used to calculate the max voltage.
Detailed correlation between sub-blocks and power line according to Exynos SoC:
- In case of Exynos3250, there are two power line as following:
--
2.22.0