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Mon, 03 Nov 2025 03:04:21 -0800 (PST) Message-ID: Subject: Re: [PATCH v5 2/2] regulator: max77675: Add MAX77675 regulator driver From: Nuno =?ISO-8859-1?Q?S=E1?= To: Joan Na Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Joan Na Date: Mon, 03 Nov 2025 11:04:57 +0000 In-Reply-To: References: <20251029023253.150257-1-joan.na@analog.com> <20251029023253.150257-3-joan.na@analog.com> <3a9441f01e82dfcbdf146a809ba4a6f9604c63d7.camel@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.1 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2025-11-03 at 11:45 +0900, Joan Na wrote: > On Wed, Oct 29, 2025 at 09:55:53AM +0000, Nuno S=C3=A1 wrote: > > On Wed, 2025-10-29 at 11:32 +0900, Joan-Na-adi wrote: > > > From: Joan Na > > >=20 > > > Add support for the Maxim Integrated MAX77675 PMIC regulator. > > >=20 > > > The MAX77675 is a compact, highly efficient SIMO (Single Inductor Mul= tiple Output) > > > power management IC that provides four programmable buck-boost switch= ing regulators > > > with only one inductor. It supports up to 700mA total output current = and operates > > > from a single-cell Li-ion battery. > > >=20 > > > An integrated power-up sequencer and I2C interface allow flexible sta= rtup > > > configuration and runtime control. > > >=20 > > > Signed-off-by: Joan Na > > > --- > >=20 > > Hi Joan, > >=20 > > Some comments from me...=20 > >=20 >=20 > Hello Nuno, >=20 > Thank you for taking the time to review. > Please refer to my response below. >=20 ... > >=20 >=20 > > > + > > > +static int max77675_apply_config(struct max77675_regulator *maxreg) > > > +{ > > > + const struct max77675_config *config =3D &maxreg->config; > > > + int ret; > > > + > > > + ret =3D max77675_set_en_mode(maxreg, config->en_mode); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set EN mode: %d\n", ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_latency_mode(maxreg, config->voltage_change_la= tency); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set latency mode: %d\n", ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_drv_sbb_strength(maxreg, config->drv_sbb_stren= gth); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set drive strength: %d\n", ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_dvs_slew_rate(maxreg, config->dvs_slew_rate); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set DVS slew rate: %d\n", ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_debounce_time(maxreg, config->debounce_time); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set EN debounce time: %d\n", ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_manual_reset_time(maxreg, config->manual_reset= _time); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set manual reset time: %d\n", ret)= ; > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_en_pullup_disable(maxreg, config->en_pullup_di= sable); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set EN pull-up disable: %d\n", ret= ); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_bias_low_power_request(maxreg, config->bias_lo= w_power_request); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set bias low-power request: %d\n",= ret); > > > + return ret; > > > + } > > > + > > > + ret =3D max77675_set_simo_int_ldo_always_on(maxreg, config->simo_in= t_ldo_always_on); > > > + if (ret) { > > > + dev_err(maxreg->dev, "Failed to set SIMO internal LDO always-on: %= d\n", ret); > > > + return ret; > > > + } > >=20 > > This seems to called during probe. All the above can be return dev_err_= probe()... > >=20 >=20 > I=E2=80=99m thinking of handling it directly where the return value is ch= ecked. What are your thoughts? >=20 > ret =3D max77675_apply_config(maxreg); > =C2=A0=C2=A0=C2=A0 if (ret) > =C2=A0=C2=A0=C2=A0=C2=A0 return dev_err_probe(maxreg->dev, ret, "Failed t= o apply config\n"); Up to you. You'll have less details if you encounter some issue though... - Nuno S=C3=A1 >=20