linux-kernel - [PATCH 0/6] Add input voltage suppliers for PMIC MCP16502 regulators

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Message-ID: <20240802084433.20958-1-andrei.simion@microchip.com>
Date: Fri, 2 Aug 2024 11:44:27 +0300
From: Andrei Simion <andrei.simion@...rochip.com>
To: <broonie@...nel.org>, <lgirdwood@...il.com>, <claudiu.beznea@...on.dev>,
	<nicolas.ferre@...rochip.com>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
	<robh@...nel.org>, <alexandre.belloni@...tlin.com>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, Andrei Simion <andrei.simion@...rochip.com>
Subject: [PATCH 0/6] Add input voltage suppliers for PMIC MCP16502 regulators

In this series of patches, support for the *-supply property [1]  is added
(correlated with supply_name [2]) from the core regulator.
Link [1]: https://github.com/torvalds/linux/blob/master/drivers/regulator/core.c#L471
Link [2]: https://github.com/torvalds/linux/blob/master/drivers/regulator/core.c#L2064

I modified the mcp16502.c driver and the dts that use this PMIC.
We added these improvements to provide a complete description of the board power scheme.

Snippet (as an example) from /sys/kernel/debug/regulator/regulator_summary
(for at91-sama7g5ek):
# cat regulator_summary
 regulator                      use open bypass  opmode voltage current     min     max
---------------------------------------------------------------------------------------
 regulator-dummy                  1    0      0 unknown     0mV     0mA     0mV     0mV
 5V_MAIN                          6    6      0 unknown  5000mV     0mA  5000mV  5000mV
    VDD_IO                        5    4      0  normal  3300mV     0mA  3300mV  3300mV
       e1208000.mmc-vqmmc         1                                 0mA     0mV     0mV
       e1208000.mmc-vmmc          1                                 0mA  3300mV  3400mV
       e1204000.mmc-vmmc          1                                 0mA  3300mV  3400mV
       VDDOUT25                   3    2      0 unknown  2500mV     0mA  2500mV  2500mV
          e1000000.adc-vref       1                                 0mA     0mV     0mV
          e1000000.adc-vddana     1                                 0mA     0mV     0mV
    VDD_DDR                       1    0      0  normal  1350mV     0mA  1350mV  1350mV
    VDD_CORE                      1    0      0  normal  1150mV     0mA  1150mV  1150mV
    VDD_OTHER                     2    1      0  normal  1050mV     0mA  1050mV  1250mV
       cpu0-cpu                   1                                 0mA  1050mV  1225mV
    LDO1                          2    1      0 unknown  1800mV     0mA  1800mV  1800mV
       e1204000.mmc-vqmmc         1                                 0mA     0mV     0mV
    LDO2

-------------------------------------------------------------------------------------------
Andrei Simion (6):
  regulator: mcp16502: Add supplier for regulators
  ARM: dts: microchip: at91-sama7g5ek: Add reg_5v to supply PMIC nodes
  ARM: dts: microchip: at91-sama7g54_curiosity: Add reg_5v to supply
    PMIC nodes
  ARM: dts: microchip: at91-sama5d2_icp: Add reg_5v to supply PMIC nodes
  ARM: dts: microchip: at91-sama5d27_wlsom1: Add reg_5v to supply PMIC
    nodes
  ARM: dts: microchip: sama5d29_curiosity: Add reg_5v to supply PMIC
    nodes

 .../dts/microchip/at91-sama5d27_wlsom1.dtsi     | 14 ++++++++++++++
 .../dts/microchip/at91-sama5d29_curiosity.dts   | 14 ++++++++++++++
 .../arm/boot/dts/microchip/at91-sama5d2_icp.dts | 14 ++++++++++++++
 .../dts/microchip/at91-sama7g54_curiosity.dts   | 14 ++++++++++++++
 arch/arm/boot/dts/microchip/at91-sama7g5ek.dts  | 14 ++++++++++++++
 drivers/regulator/mcp16502.c                    | 17 +++++++++--------
 6 files changed, 79 insertions(+), 8 deletions(-)


base-commit: f524a5e4dfb75b277c9a5ad819ca5f035f490f14
-- 
2.34.1