* [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function
@ 2020-07-02 6:23 Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 1/4] regulator: mt6397: Move buck modes into header file Anand K Mistry
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: Anand K Mistry @ 2020-07-02 6:23 UTC (permalink / raw)
To: linux-mediatek
Cc: devicetree, drinkcat, Anand K Mistry, Liam Girdwood, Rob Herring,
linux-kernel, Mark Brown, linux-arm-kernel, Matthias Brugger,
hsin-hsiung.wang
This patchset adds support for being able to change regulator modes for
the mt6397 regulator. This is needed to allow the voltage scaling
support in the MT8173 SoC to be used on the elm (Acer Chromebook R13)
and hana (several Lenovo Chromebooks) devices.
Without a of_map_mode implementation, the regulator-allowed-modes
devicetree field is skipped, and attempting to change the regulator mode
results in an error:
[ 1.439165] vpca15: mode operation not allowed
Changes in v2:
- Introduce constants in dt-bindings
- Improve conditional readability
Anand K Mistry (4):
regulator: mt6397: Move buck modes into header file
dt-bindings: regulator: mt6397: Document valid modes
regulator: mt6397: Implement of_map_mode
arm64: dts: mediatek: Update allowed mt6397 regulator modes for elm
boards
.../bindings/regulator/mt6397-regulator.txt | 3 +++
arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 4 +++-
drivers/regulator/mt6397-regulator.c | 17 ++++++++++++++---
.../regulator/mediatek,mt6397-regulator.h | 15 +++++++++++++++
4 files changed, 35 insertions(+), 4 deletions(-)
create mode 100644 include/dt-bindings/regulator/mediatek,mt6397-regulator.h
--
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 1/4] regulator: mt6397: Move buck modes into header file
2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
@ 2020-07-02 6:23 ` Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 2/4] dt-bindings: regulator: mt6397: Document valid modes Anand K Mistry
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Anand K Mistry @ 2020-07-02 6:23 UTC (permalink / raw)
To: linux-mediatek
Cc: devicetree, drinkcat, Anand K Mistry, Liam Girdwood, Rob Herring,
linux-kernel, Mark Brown, linux-arm-kernel, Matthias Brugger,
hsin-hsiung.wang
This will allow device trees to make use of these constants.
Signed-off-by: Anand K Mistry <amistry@google.com>
---
Changes in v2: None
drivers/regulator/mt6397-regulator.c | 4 +---
.../regulator/mediatek,mt6397-regulator.h | 15 +++++++++++++++
2 files changed, 16 insertions(+), 3 deletions(-)
create mode 100644 include/dt-bindings/regulator/mediatek,mt6397-regulator.h
diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c
index 269c2a6028e8..d51e98ce1138 100644
--- a/drivers/regulator/mt6397-regulator.c
+++ b/drivers/regulator/mt6397-regulator.c
@@ -13,9 +13,7 @@
#include <linux/regulator/machine.h>
#include <linux/regulator/mt6397-regulator.h>
#include <linux/regulator/of_regulator.h>
-
-#define MT6397_BUCK_MODE_AUTO 0
-#define MT6397_BUCK_MODE_FORCE_PWM 1
+#include <dt-bindings/regulator/mediatek,mt6397-regulator.h>
/*
* MT6397 regulators' information
diff --git a/include/dt-bindings/regulator/mediatek,mt6397-regulator.h b/include/dt-bindings/regulator/mediatek,mt6397-regulator.h
new file mode 100644
index 000000000000..99869a8665cf
--- /dev/null
+++ b/include/dt-bindings/regulator/mediatek,mt6397-regulator.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_REGULATOR_MEDIATEK_MT6397_H_
+#define _DT_BINDINGS_REGULATOR_MEDIATEK_MT6397_H_
+
+/*
+ * Buck mode constants which may be used in devicetree properties (eg.
+ * regulator-initial-mode, regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define MT6397_BUCK_MODE_AUTO 0
+#define MT6397_BUCK_MODE_FORCE_PWM 1
+
+#endif
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 2/4] dt-bindings: regulator: mt6397: Document valid modes
2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 1/4] regulator: mt6397: Move buck modes into header file Anand K Mistry
@ 2020-07-02 6:23 ` Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 3/4] regulator: mt6397: Implement of_map_mode Anand K Mistry
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Anand K Mistry @ 2020-07-02 6:23 UTC (permalink / raw)
To: linux-mediatek
Cc: devicetree, drinkcat, Anand K Mistry, Liam Girdwood, Rob Herring,
linux-kernel, Mark Brown, linux-arm-kernel, Matthias Brugger,
hsin-hsiung.wang
Document valid mode values for BUCK regulators.
Signed-off-by: Anand K Mistry <amistry@google.com>
---
Changes in v2: None
.../devicetree/bindings/regulator/mt6397-regulator.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
index 01141fb00875..c080086d3e62 100644
--- a/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
@@ -16,6 +16,9 @@ LDO:
ldo_vemc3v3, ldo_vgp1, ldo_vgp2, ldo_vgp3, ldo_vgp4, ldo_vgp5, ldo_vgp6,
ldo_vibr
+BUCK regulators can set regulator-initial-mode and regulator-allowed-modes to
+values specified in dt-bindings/regulator/mediatek,mt6397-regulator.h
+
Example:
pmic {
compatible = "mediatek,mt6397";
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 3/4] regulator: mt6397: Implement of_map_mode
2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 1/4] regulator: mt6397: Move buck modes into header file Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 2/4] dt-bindings: regulator: mt6397: Document valid modes Anand K Mistry
@ 2020-07-02 6:23 ` Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 4/4] arm64: dts: mediatek: Update allowed mt6397 regulator modes for elm boards Anand K Mistry
2020-07-02 15:46 ` [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Mark Brown
4 siblings, 0 replies; 6+ messages in thread
From: Anand K Mistry @ 2020-07-02 6:23 UTC (permalink / raw)
To: linux-mediatek
Cc: drinkcat, Anand K Mistry, Liam Girdwood, linux-kernel,
Mark Brown, linux-arm-kernel, Matthias Brugger, hsin-hsiung.wang
Implementing of_map_mode is necessary to be able to specify operating
modes in the devicetree using 'regulator-allowed-modes', and to change
regulator modes.
Signed-off-by: Anand K Mistry <amistry@google.com>
---
Changes in v2: None
drivers/regulator/mt6397-regulator.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c
index d51e98ce1138..0a30df5e414f 100644
--- a/drivers/regulator/mt6397-regulator.c
+++ b/drivers/regulator/mt6397-regulator.c
@@ -53,6 +53,7 @@ struct mt6397_regulator_info {
.vsel_mask = vosel_mask, \
.enable_reg = enreg, \
.enable_mask = BIT(0), \
+ .of_map_mode = mt6397_map_mode, \
}, \
.qi = BIT(13), \
.vselon_reg = voselon, \
@@ -144,6 +145,18 @@ static const unsigned int ldo_volt_table7[] = {
1300000, 1500000, 1800000, 2000000, 2500000, 2800000, 3000000, 3300000,
};
+static unsigned int mt6397_map_mode(unsigned int mode)
+{
+ switch (mode) {
+ case MT6397_BUCK_MODE_AUTO:
+ return REGULATOR_MODE_NORMAL;
+ case MT6397_BUCK_MODE_FORCE_PWM:
+ return REGULATOR_MODE_FAST;
+ default:
+ return REGULATOR_MODE_INVALID;
+ }
+}
+
static int mt6397_regulator_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 4/4] arm64: dts: mediatek: Update allowed mt6397 regulator modes for elm boards
2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
` (2 preceding siblings ...)
2020-07-02 6:23 ` [PATCH v2 3/4] regulator: mt6397: Implement of_map_mode Anand K Mistry
@ 2020-07-02 6:23 ` Anand K Mistry
2020-07-02 15:46 ` [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Mark Brown
4 siblings, 0 replies; 6+ messages in thread
From: Anand K Mistry @ 2020-07-02 6:23 UTC (permalink / raw)
To: linux-mediatek
Cc: devicetree, drinkcat, Anand K Mistry, linux-kernel, Rob Herring,
linux-arm-kernel, Matthias Brugger, hsin-hsiung.wang
This updates the allowed mt6397 regulator modes for elm (and derivative)
boards to use named constants.
Signed-off-by: Anand K Mistry <amistry@google.com>
---
Changes in v2:
- Introduce constants in dt-bindings
- Improve conditional readability
arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
index a5a12b2599a4..e9cfded307b3 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
@@ -6,6 +6,7 @@
#include <dt-bindings/input/input.h>
#include <dt-bindings/input/linux-event-codes.h>
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/regulator/mediatek,mt6397-regulator.h>
#include "mt8173.dtsi"
/ {
@@ -926,7 +927,8 @@ mt6397_vpca15_reg: buck_vpca15 {
regulator-max-microvolt = <1350000>;
regulator-ramp-delay = <12500>;
regulator-always-on;
- regulator-allowed-modes = <0 1>;
+ regulator-allowed-modes = <MT6397_BUCK_MODE_AUTO
+ MT6397_BUCK_MODE_FORCE_PWM>;
};
mt6397_vpca7_reg: buck_vpca7 {
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function
2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
` (3 preceding siblings ...)
2020-07-02 6:23 ` [PATCH v2 4/4] arm64: dts: mediatek: Update allowed mt6397 regulator modes for elm boards Anand K Mistry
@ 2020-07-02 15:46 ` Mark Brown
4 siblings, 0 replies; 6+ messages in thread
From: Mark Brown @ 2020-07-02 15:46 UTC (permalink / raw)
To: linux-mediatek, Anand K Mistry
Cc: devicetree, drinkcat, linux-kernel, Liam Girdwood, Rob Herring,
linux-arm-kernel, Matthias Brugger, hsin-hsiung.wang
On Thu, 2 Jul 2020 16:23:16 +1000, Anand K Mistry wrote:
> This patchset adds support for being able to change regulator modes for
> the mt6397 regulator. This is needed to allow the voltage scaling
> support in the MT8173 SoC to be used on the elm (Acer Chromebook R13)
> and hana (several Lenovo Chromebooks) devices.
>
> Without a of_map_mode implementation, the regulator-allowed-modes
> devicetree field is skipped, and attempting to change the regulator mode
> results in an error:
> [ 1.439165] vpca15: mode operation not allowed
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
Thanks!
[1/3] regulator: mt6397: Move buck modes into header file
commit: 1c537b2d729698717f01fcea13721818be5adde7
[2/3] regulator: mt6397: Document valid modes
commit: 347f12d573412cb7ba4781b58f42f0ca7eecde6d
[3/3] regulator: mt6397: Implement of_map_mode
commit: 8096236db4349c43a2b19b8ceb11b0b997354223
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
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2020-07-02 6:23 [PATCH v2 0/4] regulator: mt6397: Implement of_map_mode regulator_desc function Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 1/4] regulator: mt6397: Move buck modes into header file Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 2/4] dt-bindings: regulator: mt6397: Document valid modes Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 3/4] regulator: mt6397: Implement of_map_mode Anand K Mistry
2020-07-02 6:23 ` [PATCH v2 4/4] arm64: dts: mediatek: Update allowed mt6397 regulator modes for elm boards Anand K Mistry
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