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Mon, 20 Oct 2025 07:29:32 -0700 (PDT) Message-ID: <64b28a11-337a-42ba-8765-d94b19070d66@gmail.com> Date: Mon, 20 Oct 2025 07:29:28 -0700 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 v2 7/8] reset: imx8mp-audiomix: Support i.MX8ULP SIM LPAV To: Frank Li Cc: Abel Vesa , Peng Fan , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Fabio Estevam , Philipp Zabel , Daniel Baluta , Shengjiu Wang , linux-clk@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Pengutronix Kernel Team References: <20251017112025.11997-1-laurentiumihalcea111@gmail.com> <20251017112025.11997-8-laurentiumihalcea111@gmail.com> Content-Language: en-US From: Laurentiu Mihalcea In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 10/17/2025 7:57 AM, Frank Li wrote: > On Fri, Oct 17, 2025 at 04:20:24AM -0700, Laurentiu Mihalcea wrote: >> From: Laurentiu Mihalcea >> >> Support i.MX8ULP's SIM LPAV by adding its reset map definition. >> >> Reviewed-by: Daniel Baluta >> Signed-off-by: Laurentiu Mihalcea >> --- >> drivers/reset/reset-imx8mp-audiomix.c | 51 +++++++++++++++++++++++++++ >> 1 file changed, 51 insertions(+) >> >> diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c >> index c370913107f5..b333d7c1442a 100644 >> --- a/drivers/reset/reset-imx8mp-audiomix.c >> +++ b/drivers/reset/reset-imx8mp-audiomix.c >> @@ -3,6 +3,7 @@ >> * Copyright 2024 NXP >> */ >> >> +#include >> #include >> >> #include >> @@ -17,6 +18,8 @@ >> #define IMX8MP_AUDIOMIX_EARC_RESET_OFFSET 0x200 >> #define IMX8MP_AUDIOMIX_DSP_RUNSTALL_OFFSET 0x108 >> >> +#define IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET 0x8 >> + >> struct imx8mp_reset_map { >> unsigned int offset; >> unsigned int mask; >> @@ -55,6 +58,50 @@ static const struct imx8mp_reset_info imx8mp_reset_info = { >> .num_lines = ARRAY_SIZE(imx8mp_reset_map), >> }; >> >> +static const struct imx8mp_reset_map imx8ulp_reset_map[] = { >> + [IMX8ULP_SIM_LPAV_HIFI4_DSP_DBG_RST] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(25), > Register defination still perfer use macro. If not, let me know. I see no value in adding defines for the masks (see patch 4 commit message) in this particular scenario. Is the assignment of the "mask" field for the "struct imx8mp_reset_map" item found at index  IMX8ULP_SIM_LPAV_HIFI4_DSP_DBG_RST not enough to deduce that the constant we're using is the mask for the DSP_DBG_RST bit? > > Frank >> + .shift = 25, >> + .active_low = false, >> + }, >> + [IMX8ULP_SIM_LPAV_HIFI4_DSP_RST] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(16), >> + .shift = 16, >> + .active_low = false, >> + }, >> + [IMX8ULP_SIM_LPAV_HIFI4_DSP_STALL] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(13), >> + .shift = 13, >> + .active_low = false, >> + }, >> + [IMX8ULP_SIM_LPAV_DSI_RST_BYTE_N] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(5), >> + .shift = 5, >> + .active_low = true, >> + }, >> + [IMX8ULP_SIM_LPAV_DSI_RST_ESC_N] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(4), >> + .shift = 4, >> + .active_low = true, >> + }, >> + [IMX8ULP_SIM_LPAV_DSI_RST_DPI_N] = { >> + .offset = IMX8ULP_SIM_LPAV_SYSCTRL0_OFFSET, >> + .mask = BIT(3), >> + .shift = 3, >> + .active_low = true, >> + }, >> +}; >> + >> +static const struct imx8mp_reset_info imx8ulp_reset_info = { >> + .map = imx8ulp_reset_map, >> + .num_lines = ARRAY_SIZE(imx8ulp_reset_map), >> +}; >> + >> struct imx8mp_audiomix_reset { >> struct reset_controller_dev rcdev; >> void __iomem *base; >> @@ -183,6 +230,10 @@ static const struct auxiliary_device_id imx8mp_audiomix_reset_ids[] = { >> .name = "clk_imx8mp_audiomix.reset", >> .driver_data = (kernel_ulong_t)&imx8mp_reset_info, >> }, >> + { >> + .name = "clk_imx8ulp_sim_lpav.reset", >> + .driver_data = (kernel_ulong_t)&imx8ulp_reset_info, >> + }, >> { } >> }; >> MODULE_DEVICE_TABLE(auxiliary, imx8mp_audiomix_reset_ids); >> -- >> 2.43.0 >>