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From: Inochi Amaoto <inochiama@gmail.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	 Inochi Amaoto <inochiama@gmail.com>
Cc: "Jingoo Han" <jingoohan1@gmail.com>,
	"Manivannan Sadhasivam" <mani@kernel.org>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Yixun Lan" <dlan@kernel.org>, "Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>, "Frank Li" <Frank.Li@nxp.com>,
	"Niklas Cassel" <cassel@kernel.org>,
	"Sherry Sun" <sherry.sun@nxp.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Christian Bruel" <christian.bruel@foss.st.com>,
	"Krishna Chaitanya Chundru" <krishna.chundru@oss.qualcomm.com>,
	"Senchuan Zhang" <zhangsenchuan@eswincomputing.com>,
	"Alex Elder" <elder@riscstar.com>,
	"Xincheng Zhang" <zhangxincheng@ultrarisc.com>,
	"Randolph Lin" <randolph@andestech.com>,
	"Siddharth Vadapalli" <s-vadapalli@ti.com>,
	"Vidya Sagar" <vidyas@nvidia.com>,
	"Neil Armstrong" <neil.armstrong@linaro.org>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Uwe Kleine-König (The Capable Hub)"
	<u.kleine-koenig@baylibre.com>,
	"Pengpeng Hou" <pengpeng@iscas.ac.cn>,
	"Anirudh Srinivasan" <asrinivasan@oss.tenstorrent.com>,
	"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
	linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	spacemit@lists.linux.dev, "Yixun Lan" <dlan@gentoo.org>,
	"Longbin Li" <looong.bin@gmail.com>
Subject: Re: [PATCH v5 2/6] PCI: spacemit-k1: Add multiple PHY handles support
Date: Wed, 9 Sep 2026 16:00:15 +0800	[thread overview]
Message-ID: <aqEQnkrPSKB-3fam@inochi.infowork> (raw)
In-Reply-To: <ap_jh_NAqHnIlZeu@ashevche-desk.local>

On Tue, Sep 08, 2026 at 01:29:27PM +0300, Andy Shevchenko wrote:
> On Mon, Sep 07, 2026 at 07:26:01PM +0800, Inochi Amaoto wrote:
> > The PCIe controller on Spacemit K3 may use multiple PHYs at the
> > same time. The feature is not supported by the current driver.
> > So extend the PHY definition to support multiple PHY handles.
> 
> ...
> 
> > +static int k1_pcie_get_phy_handle(struct k1_pcie *k1, struct device_node *node)
> > +{
> > +	const struct k1_pcie_device_data *data = k1->data;
> > +	struct device *dev = k1->pci.dev;
> > +	int count;
> > +
> > +	count = devm_of_phy_bulk_get_all(dev, node, &k1->phys);
> > +	if (count < 0)
> > +		return count;
> > +	if (count == 0 || count > data->max_phy_count)
> > +		return -EINVAL;
> 
> Elsewhere we distinguish count == 0 with -ENOENT.
> 

Is there is an example? I think it is suitable for its internal check 
to translate -ENOENT to count 0, because no phys property means no
phy. For a get helper with optional semantics. I think it is fine
to return 0.

Regards,
Inochi

> > +	k1->phy_count = count;
> > +
> > +	return 0;
> > +}
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

WARNING: multiple messages have this Message-ID (diff)
From: Inochi Amaoto <inochiama@gmail.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	 Inochi Amaoto <inochiama@gmail.com>
Cc: "Jingoo Han" <jingoohan1@gmail.com>,
	"Manivannan Sadhasivam" <mani@kernel.org>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Yixun Lan" <dlan@kernel.org>, "Paul Walmsley" <pjw@kernel.org>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	"Alexandre Ghiti" <alex@ghiti.fr>, "Frank Li" <Frank.Li@nxp.com>,
	"Niklas Cassel" <cassel@kernel.org>,
	"Sherry Sun" <sherry.sun@nxp.com>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Christian Bruel" <christian.bruel@foss.st.com>,
	"Krishna Chaitanya Chundru" <krishna.chundru@oss.qualcomm.com>,
	"Senchuan Zhang" <zhangsenchuan@eswincomputing.com>,
	"Alex Elder" <elder@riscstar.com>,
	"Xincheng Zhang" <zhangxincheng@ultrarisc.com>,
	"Randolph Lin" <randolph@andestech.com>,
	"Siddharth Vadapalli" <s-vadapalli@ti.com>,
	"Vidya Sagar" <vidyas@nvidia.com>,
	"Neil Armstrong" <neil.armstrong@linaro.org>,
	"Danilo Krummrich" <dakr@kernel.org>,
	"Uwe Kleine-König (The Capable Hub)"
	<u.kleine-koenig@baylibre.com>,
	"Pengpeng Hou" <pengpeng@iscas.ac.cn>,
	"Anirudh Srinivasan" <asrinivasan@oss.tenstorrent.com>,
	"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
	linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
	spacemit@lists.linux.dev, "Yixun Lan" <dlan@gentoo.org>,
	"Longbin Li" <looong.bin@gmail.com>
Subject: Re: [PATCH v5 2/6] PCI: spacemit-k1: Add multiple PHY handles support
Date: Wed, 9 Sep 2026 16:00:15 +0800	[thread overview]
Message-ID: <aqEQnkrPSKB-3fam@inochi.infowork> (raw)
In-Reply-To: <ap_jh_NAqHnIlZeu@ashevche-desk.local>

On Tue, Sep 08, 2026 at 01:29:27PM +0300, Andy Shevchenko wrote:
> On Mon, Sep 07, 2026 at 07:26:01PM +0800, Inochi Amaoto wrote:
> > The PCIe controller on Spacemit K3 may use multiple PHYs at the
> > same time. The feature is not supported by the current driver.
> > So extend the PHY definition to support multiple PHY handles.
> 
> ...
> 
> > +static int k1_pcie_get_phy_handle(struct k1_pcie *k1, struct device_node *node)
> > +{
> > +	const struct k1_pcie_device_data *data = k1->data;
> > +	struct device *dev = k1->pci.dev;
> > +	int count;
> > +
> > +	count = devm_of_phy_bulk_get_all(dev, node, &k1->phys);
> > +	if (count < 0)
> > +		return count;
> > +	if (count == 0 || count > data->max_phy_count)
> > +		return -EINVAL;
> 
> Elsewhere we distinguish count == 0 with -ENOENT.
> 

Is there is an example? I think it is suitable for its internal check 
to translate -ENOENT to count 0, because no phys property means no
phy. For a get helper with optional semantics. I think it is fine
to return 0.

Regards,
Inochi

> > +	k1->phy_count = count;
> > +
> > +	return 0;
> > +}
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  reply	other threads:[~2026-09-09  8:00 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-07 11:25 [PATCH v5 0/6] riscv: spacemit: Add PCIe RC controller support for K3 Inochi Amaoto
2026-09-07 11:25 ` Inochi Amaoto
2026-09-07 11:26 ` [PATCH v5 1/6] PCI: spacemit-k1: Add device data support Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:31   ` sashiko-bot
2026-09-08 10:26   ` Andy Shevchenko
2026-09-08 10:26     ` Andy Shevchenko
2026-09-09  8:00     ` Inochi Amaoto
2026-09-09  8:00       ` Inochi Amaoto
2026-09-10  5:44       ` Yao Zi
2026-09-10  5:44         ` Yao Zi
2026-09-10  6:42         ` Andy Shevchenko
2026-09-10  6:42           ` Andy Shevchenko
2026-09-10 12:15           ` Yao Zi
2026-09-10 12:15             ` Yao Zi
2026-09-07 11:26 ` [PATCH v5 2/6] PCI: spacemit-k1: Add multiple PHY handles support Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:37   ` sashiko-bot
2026-09-08 10:29   ` Andy Shevchenko
2026-09-08 10:29     ` Andy Shevchenko
2026-09-09  8:00     ` Inochi Amaoto [this message]
2026-09-09  8:00       ` Inochi Amaoto
2026-09-09 14:27       ` Andy Shevchenko
2026-09-09 14:27         ` Andy Shevchenko
2026-09-07 11:26 ` [PATCH v5 3/6] PCI: spacemit-k1: Add device id update helper Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:31   ` sashiko-bot
2026-09-07 11:26 ` [PATCH v5 4/6] dt-bindings: PCI: snps,dw-pcie: Add msi-parent for MSI handle check Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:35   ` sashiko-bot
2026-09-07 11:26 ` [PATCH v5 5/6] dt-bindings: PCI: spacemit: Introduce Spacemit K3 PCIe host controller Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:38   ` sashiko-bot
2026-09-07 13:08   ` Troy Mitchell
2026-09-07 13:08     ` Troy Mitchell
2026-09-09  8:01     ` Inochi Amaoto
2026-09-09  8:01       ` Inochi Amaoto
2026-09-07 11:26 ` [PATCH v5 6/6] PCI: spacemit-k1: Add Spacemit K3 PCIe host controller support Inochi Amaoto
2026-09-07 11:26   ` Inochi Amaoto
2026-09-07 11:42   ` sashiko-bot
2026-09-07 13:14   ` Troy Mitchell
2026-09-07 13:14     ` Troy Mitchell
2026-09-09  7:51     ` Inochi Amaoto
2026-09-09  7:51       ` Inochi Amaoto
2026-09-10  9:51       ` Troy Mitchell
2026-09-10  9:51         ` Troy Mitchell

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