linux-kernel - Re: [PATCH v1 2/3] spi: cadence-quadspi: Add clock configuration for StarFive JH7110 QSPI

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Date:   Tue, 30 May 2023 10:05:38 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     Mark Brown <broonie@...nel.org>
CC:     <devicetree@...r.kernel.org>, <linux-spi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Emil Renner Berthing" <kernel@...il.dk>,
        Ziv Xu <ziv.xu@...rfivetech.com>
Subject: Re: [PATCH v1 2/3] spi: cadence-quadspi: Add clock configuration for
 StarFive JH7110 QSPI



On 2023/5/29 14:44, William Qiu wrote:
> 
> 
> On 2023/5/26 23:36, Mark Brown wrote:
>> On Fri, May 26, 2023 at 02:25:28PM +0800, William Qiu wrote:
>> 
>>>  	if (of_device_is_compatible(pdev->dev.of_node, "starfive,jh7110-qspi")) {
>>> +		qspi_ahb = devm_clk_get(dev, "qspi-ahb");
>>> +		if (IS_ERR(qspi_ahb)) {
>>> +			dev_err(dev, "Cannot claim QSPI_AHB clock.\n");
>>> +			ret = PTR_ERR(qspi_ahb);
>>> +			return ret;
>>> +		}
>>> +
>>> +		ret = clk_prepare_enable(qspi_ahb);
>>> +		if (ret) {
>>> +			dev_err(dev, "Cannot enable QSPI AHB clock.\n");
>>> +			goto probe_clk_failed;
>>> +		}
>> 
>> Nothing ever disables or unprepares this clock as far as I can tell?
>> Perhaps also consider using the clk_bulk_ APIs.
> 
> I will add in next version.
> 
> Thanks for taking time to review this patch series and give useful
> suggestions.
> 
> Best regards,
> William

Hi Mark,

	Now I want to replace the original devm_clk_get API in the
driver with devm_clk_bulk_get_all API, which can achieve compatibility,
but it seems that it is not good for other ip with only one clock, so I
want to ask about that can I replace it? Or define that inside jh7110?

Best regards,
William