From: Marek Vasut <marex@denx.de>
To: Peng Fan <peng.fan@nxp.com>, Abel Vesa <abel.vesa@linaro.org>
Cc: Lucas Stach <l.stach@pengutronix.de>,
"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
Abel Vesa <abel.vesa@nxp.com>, Fabio Estevam <festevam@gmail.com>,
Jacky Bai <ping.bai@nxp.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Michael Turquette <mturquette@baylibre.com>,
Shawn Guo <shawnguo@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
dl-linux-imx <linux-imx@nxp.com>
Subject: Re: [PATCH v3 3/6] clk: imx: imx8mp: Add audiomix block control
Date: Thu, 4 Aug 2022 11:31:33 +0200 [thread overview]
Message-ID: <e54590c4-7e94-0b97-9415-c970a170c6e1@denx.de> (raw)
In-Reply-To: <DU0PR04MB9417D9CE71ED2A72C5515D91889F9@DU0PR04MB9417.eurprd04.prod.outlook.com>
On 8/4/22 11:13, Peng Fan wrote:
>> Subject: Re: [PATCH v3 3/6] clk: imx: imx8mp: Add audiomix block control
>>
>> On 6/28/22 09:44, Abel Vesa wrote:
>>> On 22-06-27 18:23:33, Marek Vasut wrote:
>>>> On 6/27/22 17:35, Abel Vesa wrote:
>>>>> On 22-06-25 03:32:32, Marek Vasut wrote:
>>>>>> Unlike the other block control IPs in i.MX8M, the audiomix is
>>>>>> mostly a series of clock gates and muxes. Model it as a large
>>>>>> static table of gates and muxes with one exception, which is the
>>>>>> PLL14xx . The PLL14xx SAI PLL has to be registered separately.
>>>>>>
>>>>>
>>>>> Again, there is a chance that the blk-ctrl driver might disable the
>>>>> PD from under this.
>>>>
>>>> Can you elaborate a bit more on this ? How/why do you think so ?
>>>
>>> At some point, the PDs from the Audiomix IP block will be added to the
>>> drivers/soc/imx/imx8mp-blk-ctrl.c. Then, you'll have 2 drivers with
>>> the same address range and the imx8mp-blk-ctrl also has runtime PM
>> enabled.
>>
>> Why would the PDs be added into the block control driver?
>>
>> The audiomix is purely a clock mux driver, not really a block control driver
>> providing PDs of its own.
>
> I recalled that with with blk-ctrl working as clock provider, there is dead lock
> issue, if the blk-ctrl node has a power-domain entry. Not very sure.
How can I verify that ? Lockdep ?
I run this series for months and haven't seen a lock up or splat.
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next prev parent reply other threads:[~2022-08-04 9:32 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-25 1:32 [PATCH v3 1/6] clk: Introduce devm_clk_hw_register_mux_parent_data() Marek Vasut
2022-06-25 1:32 ` [PATCH v3 2/6] clk: Introduce devm_clk_hw_register_gate_parent_data() Marek Vasut
2022-06-25 1:32 ` [PATCH v3 3/6] clk: imx: imx8mp: Add audiomix block control Marek Vasut
2022-06-27 15:35 ` Abel Vesa
2022-06-27 16:23 ` Marek Vasut
2022-06-28 7:44 ` Abel Vesa
2022-06-28 17:06 ` Marek Vasut
2022-06-29 7:41 ` Abel Vesa
2022-08-04 9:13 ` Peng Fan
2022-08-04 9:31 ` Marek Vasut [this message]
2022-08-11 14:20 ` Abel Vesa
2022-08-11 14:30 ` Marek Vasut
2022-08-11 15:03 ` Abel Vesa
2022-08-11 15:14 ` Abel Vesa
2022-08-11 16:38 ` Marek Vasut
2022-08-11 16:51 ` Abel Vesa
2022-06-29 7:43 ` Abel Vesa
[not found] ` <CAA+D8ANLrPML3Hp3fYyfiSSUs9V6xAu55d4Y2-8cVVAuTNwaMw@mail.gmail.com>
2022-10-19 14:33 ` Marek Vasut
[not found] ` <CAA+D8ANdOQaz05_SCmTgEW_bCS4ABBLgMzXese_3WWiF8WxzqA@mail.gmail.com>
2022-10-25 21:10 ` Marek Vasut
[not found] ` <CAA+D8AO3KZr9uxS-T1LXK568EeE-wf8yxGCYiayBBxFKDF_HZQ@mail.gmail.com>
2022-10-26 11:03 ` Marek Vasut
2023-02-22 16:58 ` Luca Ceresoli
2022-06-25 1:32 ` [PATCH v3 4/6] dt-bindings: clock: " Marek Vasut
2022-06-25 1:32 ` [PATCH v3 5/6] arm64: dts: imx8mp: Add SAI, SDMA, AudioMIX Marek Vasut
2023-02-22 16:59 ` Luca Ceresoli
2022-06-25 1:32 ` [PATCH v3 6/6] arm64: dts: imx8mp: Add analog audio output on i.MX8MP EVK Marek Vasut
2023-02-22 17:22 ` Luca Ceresoli
2023-02-22 17:25 ` [PATCH] arm64: dts: imx8mp-msc-sm2s: Add sound card Luca Ceresoli
2023-02-22 17:59 ` Marco Felsch
2023-02-22 18:39 ` Marek Vasut
2023-02-22 19:02 ` Marco Felsch
2023-02-23 16:23 ` Marek Vasut
2023-02-24 12:56 ` Marco Felsch
2023-02-22 19:57 ` Luca Ceresoli
2023-02-22 18:20 ` Krzysztof Kozlowski
2023-02-23 7:30 ` kernel test robot
2023-02-23 16:24 ` [PATCH v3 6/6] arm64: dts: imx8mp: Add analog audio output on i.MX8MP EVK Marek Vasut
2023-02-24 16:16 ` Luca Ceresoli
2022-10-10 6:20 ` [PATCH v3 3/6] clk: imx: imx8mp: Add audiomix block control Shengjiu Wang
2022-11-21 8:17 ` [PATCH v3 1/6] clk: Introduce devm_clk_hw_register_mux_parent_data() Richard Leitner
2022-11-26 15:23 ` Marek Vasut
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