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Signed-off-by: Catalin Popescu Acked-by: Conor Dooley --- v2: - rebase on linux-next tag next-20250227 - add acked-by --- .../bindings/net/bluetooth/nxp,88w8987-bt.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) base-commit: be5c7bbb3a64baf884481a1ba0c2f8fb2f93f7c3 diff --git a/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml index 04f55fac42ce..97c694f2d70a 100644 --- a/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml +++ b/Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml @@ -50,6 +50,14 @@ properties: description: The GPIO number of the NXP chipset used for BT_WAKE_OUT. + vcc-supply: + description: + phandle of the regulator that provides the supply voltage. + + reset-gpios: + description: + Chip powerdown/reset signal (PDn). + required: - compatible @@ -66,5 +74,7 @@ examples: device-wakeup-gpios = <&gpio 11 GPIO_ACTIVE_HIGH>; nxp,wakein-pin = /bits/ 8 <18>; 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X-OriginatorOrg: leica-geosystems.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2025 10:57:21.0318 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d41df6e7-f69e-489d-5295-08dd571d8282 X-MS-Exchange-CrossTenant-Id: 1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=1b16ab3e-b8f6-4fe3-9f3e-2db7fe549f6a;Ip=[193.8.40.94];Helo=[hexagon.com] X-MS-Exchange-CrossTenant-AuthSource: DB1PEPF000509ED.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR06MB6799 NXP bluetooth chip shares power supply and reset gpio with a WLAN chip. Add support for power supply and reset and enforce powerup sequence: - apply power supply - deassert reset/powerdown Signed-off-by: Catalin Popescu Reviewed-by: Neeraj Sanjay Kale --- v2: - rebase on linux-next tag next-20250227 - add reviewed-by --- drivers/bluetooth/btnxpuart.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 4f2f429c9800..81d1c9b97146 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include #include @@ -191,6 +193,7 @@ struct btnxpuart_dev { struct ps_data psdata; struct btnxpuart_data *nxp_data; + struct reset_control *pdn; }; #define NXP_V1_FW_REQ_PKT 0xa5 @@ -1522,6 +1525,7 @@ static int nxp_serdev_probe(struct serdev_device *serdev) { struct hci_dev *hdev; struct btnxpuart_dev *nxpdev; + int err; nxpdev = devm_kzalloc(&serdev->dev, sizeof(*nxpdev), GFP_KERNEL); if (!nxpdev) @@ -1549,6 +1553,16 @@ static int nxp_serdev_probe(struct serdev_device *serdev) crc8_populate_msb(crc8_table, POLYNOMIAL8); + nxpdev->pdn = devm_reset_control_get_optional_shared(&serdev->dev, NULL); + if (IS_ERR(nxpdev->pdn)) + return PTR_ERR(nxpdev->pdn); + + err = devm_regulator_get_enable(&serdev->dev, "vcc"); + if (err) { + dev_err(&serdev->dev, "Failed to enable vcc regulator\n"); + return err; + } + /* Initialize and register HCI device */ hdev = hci_alloc_dev(); if (!hdev) { @@ -1556,6 +1570,8 @@ static int nxp_serdev_probe(struct serdev_device *serdev) return -ENOMEM; } + reset_control_deassert(nxpdev->pdn); + nxpdev->hdev = hdev; hdev->bus = HCI_UART; @@ -1583,6 +1599,7 @@ static int nxp_serdev_probe(struct serdev_device *serdev) return 0; probe_fail: + reset_control_assert(nxpdev->pdn); hci_free_dev(hdev); return -ENODEV; } @@ -1609,6 +1626,7 @@ static void nxp_serdev_remove(struct serdev_device *serdev) } ps_cleanup(nxpdev); hci_unregister_dev(hdev); + reset_control_assert(nxpdev->pdn); hci_free_dev(hdev); }