From: Alex Elder <elder@riscstar•com>
To: andrew+netdev@lunn•ch, davem@davemloft•net, edumazet@google•com,
kuba@kernel•org, pabeni@redhat•com,
maxime.chevallier@bootlin•com, rmk+kernel@armlinux•org.uk,
andersson@kernel•org, konradybcio@kernel•org, robh@kernel•org,
krzk+dt@kernel•org, conor+dt@kernel•org, linusw@kernel•org,
brgl@kernel•org, arnd@arndb•de, gregkh@linuxfoundation•org
Cc: Daniel Thompson <daniel@riscstar•com>,
elder@riscstar•com, mohd.anwar@oss•qualcomm.com,
a0987203069@gmail•com, alexandre.torgue@foss•st.com,
ast@kernel•org, boon.khai.ng@altera•com, chenchuangyu@xiaomi•com,
chenhuacai@kernel•org, daniel@iogearbox•net, hawk@kernel•org,
hkallweit1@gmail•com, inochiama@gmail•com,
john.fastabend@gmail•com, julianbraha@gmail•com,
livelycarpet87@gmail•com, mcoquelin.stm32@gmail•com, me@ziyao•cc,
prabhakar.mahadev-lad.rj@bp•renesas.com,
richardcochran@gmail•com, rohan.g.thomas@altera•com,
sdf@fomichev•me, siyanteng@cqsoftware•com.cn,
weishangjuan@eswincomputing•com, wens@kernel•org,
netdev@vger•kernel.org, bpf@vger•kernel.org,
linux-arm-msm@vger•kernel.org, devicetree@vger•kernel.org,
linux-gpio@vger•kernel.org,
linux-stm32@st-md-mailman•stormreply.com,
linux-arm-kernel@lists•infradead.org,
linux-kernel@vger•kernel.org
Subject: [PATCH net-next v2 02/14] net: phy: qcom: qca808x: Add regulator management
Date: Thu, 4 Jun 2026 20:00:09 -0500 [thread overview]
Message-ID: <20260605010022.968612-3-elder@riscstar.com> (raw)
In-Reply-To: <20260605010022.968612-1-elder@riscstar.com>
From: Daniel Thompson <daniel@riscstar•com>
QCA8081 appears in embedded board designs paired with GPIO controlled
regulators for its power rails. Add logic to allow these regulators to
be turned on during a probe.
In order to avoid the complexity of tracking state for suspend with and
without WoL we take a tremendously simple "always-on" approach to
regulator management, essentially relying on BMCR_PDOWN to conserve
power when the phy device exists.
Signed-off-by: Daniel Thompson <daniel@riscstar•com>
Signed-off-by: Alex Elder <elder@riscstar•com>
---
drivers/net/phy/qcom/qca808x.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/net/phy/qcom/qca808x.c b/drivers/net/phy/qcom/qca808x.c
index 8eb51b1a006c4..fc3f2cf2e55d0 100644
--- a/drivers/net/phy/qcom/qca808x.c
+++ b/drivers/net/phy/qcom/qca808x.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+
#include <linux/phy.h>
+#include <linux/regulator/consumer.h>
#include <linux/module.h>
#include "qcom.h"
@@ -178,15 +179,44 @@ static void qca808x_fill_possible_interfaces(struct phy_device *phydev)
__set_bit(PHY_INTERFACE_MODE_2500BASEX, possible);
}
+static int qca808x_power_on(struct phy_device *phydev)
+{
+#ifdef CONFIG_OF
+ static const char * const regulator_names[] = {
+ "avdd18", "vdd", "vdd18", "vdd125"
+ };
+ struct device *dev = &phydev->mdio.dev;
+ u32 count = 0;
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(regulator_names); i++) {
+ ret = devm_regulator_get_enable_optional(dev, regulator_names[i]);
+ if (!ret)
+ count++;
+ else if (ret != -ENODEV)
+ return ret;
+ }
+
+ if (count)
+ fsleep(phydev->mdio.reset_assert_delay);
+#endif
+ return 0;
+}
+
static int qca808x_probe(struct phy_device *phydev)
{
struct device *dev = &phydev->mdio.dev;
struct qca808x_priv *priv;
+ int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
+ ret = qca808x_power_on(phydev);
+ if (ret)
+ return ret;
+
/* Init LED polarity mode to -1 */
priv->led_polarity_mode = -1;
--
2.51.0
next prev parent reply other threads:[~2026-06-05 1:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 1:00 [PATCH net-next v2 00/14] net: enable TC956x support Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 01/14] dt-bindings: net: qca,qca808x: Add regulator properties Alex Elder
2026-06-05 1:00 ` Alex Elder [this message]
2026-06-05 1:00 ` [PATCH net-next v2 03/14] net: pcs: pcs-xpcs-regmap: support XPCS memory-mapped MDIO bus via regmap Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 04/14] net: pcs: xpcs: re-order xpcs_pre_config() to update after the reset Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 05/14] net: pcs: pcs-xpcs: select operating mode for 10G-baseR capable PCS Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 06/14] net: stmmac: dma: create a separate dma_device pointer Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 07/14] net: stmmac: dwxgmac2: Add multi MSI interrupt mode Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 08/14] net: stmmac: dwxgmac2: Add XGMAC 3.01a support Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 09/14] net: stmmac: dwxgmac2: export symbols for XGMAC 3.01a DMA Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 10/14] dt-bindings: net: toshiba,tc9654-dwmac: add TC9564 Ethernet bridge Alex Elder
2026-06-05 2:40 ` Rob Herring (Arm)
2026-06-05 1:00 ` [PATCH net-next v2 11/14] misc: tc956x_pci: add TC956x/QPS615 support Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 12/14] gpio: tc956x: " Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 13/14] net: stmmac: " Alex Elder
2026-06-05 1:00 ` [PATCH net-next v2 14/14] arm64: dts: qcom: qcs6490-rb3gen2: enable TC9564 with a single QCA8081 phy Alex Elder
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