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Fri, 21 Nov 2025 01:29:50 -0800 (PST) Message-ID: <3959e908-ae61-4424-a8ef-89f655a4de8c@gmail.com> Date: Fri, 21 Nov 2025 01:29:48 -0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 4/6] reset: imx8mp-audiomix: Extend the driver usage To: Philipp Zabel , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Fabio Estevam , Daniel Baluta , Shengjiu Wang , Frank Li Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Pengutronix Kernel Team References: <20251114133738.1762-1-laurentiumihalcea111@gmail.com> <20251114133738.1762-5-laurentiumihalcea111@gmail.com> <8b225c56612ff01845a90388be0945c7d0b3f0d2.camel@pengutronix.de> Content-Language: en-US From: Laurentiu Mihalcea In-Reply-To: <8b225c56612ff01845a90388be0945c7d0b3f0d2.camel@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 11/14/2025 8:02 AM, Philipp Zabel wrote: > On Fr, 2025-11-14 at 05:37 -0800, Laurentiu Mihalcea wrote: >> From: Laurentiu Mihalcea >> >> Switch to per-device reset map to allow reusing the driver for other NXP >> block control IPs. >> >> Reviewed-by: Daniel Baluta >> Reviewed-by: Frank Li >> Signed-off-by: Laurentiu Mihalcea >> --- >> drivers/reset/reset-imx8mp-audiomix.c | 18 ++++++++++++++++-- >> 1 file changed, 16 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c >> index 35df9bd5f71a..d3396f37d1ff 100644 >> --- a/drivers/reset/reset-imx8mp-audiomix.c >> +++ b/drivers/reset/reset-imx8mp-audiomix.c >> @@ -24,7 +24,12 @@ struct imx8mp_reset_map { >> bool active_low; >> }; >> >> -static const struct imx8mp_reset_map reset_map[] = { >> +struct imx8mp_reset_info { >> + const struct imx8mp_reset_map *map; >> + int num_lines; >> +}; >> + >> +static const struct imx8mp_reset_map imx8mp_reset_map[] = { >> [IMX8MP_AUDIOMIX_EARC_RESET] = { >> .offset = IMX8MP_AUDIOMIX_EARC_RESET_OFFSET, >> .bit = 0, >> @@ -42,9 +47,15 @@ static const struct imx8mp_reset_map reset_map[] = { >> }, >> }; >> >> +static const struct imx8mp_reset_info imx8mp_reset_info = { >> + .map = imx8mp_reset_map, >> + .num_lines = ARRAY_SIZE(imx8mp_reset_map), >> +}; >> + >> struct imx8mp_audiomix_reset { >> struct reset_controller_dev rcdev; >> struct regmap *regmap; >> + const struct imx8mp_reset_info *rinfo; > Since only rinfo->map is used in imx8mp_audiomix_update(), you could > directly store a > > const struct imx8mp_reset_map *map; hm, that is true, but I wonder if instead of replacing "rinfo" with "map", it would be better to keep "rinfo" and add an out-of-bounds check for the reset ID in imx8mp_audiomix_update(). Something like:                 if (id >= priv->rinfo->num_lines)                     return -EINVAL; we are stuck with "struct imx8mp_reset_info" so might as well fully make use of it? > > > regards > Philipp