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Wysocki" , Danilo Krummrich , "Christophe Leroy (CS GROUP)" , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Geert Uytterhoeven , Magnus Damm , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux-renesas-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1899; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=PbFFIprfToa4la34wmCmAKivaJm7MBQFtk1XHPgSNcg=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBpbgoV9sfuT2VvhKGZTGz6p/Fpn/MdjF0ME6wrx zPiggHM5viJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCaW4KFQAKCRAFnS7L/zaE w7fqD/9JerKCgcU3vWvfo1Hz4H9oZ1Phw/+RcPbdyt6LAUfl+9qyGpxqNKxeCeC13AqyqLCFTU9 vtgZoPGxKFtxYTTB303D8vGvNtcm15aQQnQZ5qQsCTwshMpaxqWTaW0MIBH7rF4bFIuU/hu2k3H km9rXyr2ze7sMGjL2ZdAZbWdq7h4a7rKUOUhB42EBoY/g5t+2Nf0cGItt36Y9VKxVsUrEW1gcTb 2q74U3LKt5IiGzLIdSosJxMYiLQL/5RPBdgkpB4CgpAhTeeCsJ6MzEz6o+3+svQCIxmIf37+OP4 eItXkBJF/sBodLXDhni8ooEdyhdEmn2TXQaSKwq8udjKlU02e4DJa6veW6Lh3rgLkksL1E/D1au Eb8kDWbD13muh/brJ7zVB8uJD25VlpKrIAFoth/coR3lWabcgaICEXy1M+mPho6+NFfieRKNSkm QDLzesgb9UYAXcIDXJ3CaqzVZwimwNqDf/lHjrY9oBr68CdUz9p9Tgeb4O5GWheVuJ1mWY69iIp sdeRdFuVq+TjtnzDhJpHq+lFX5Zyi7nQwcJV3R/Ee0FmJA0BIn5iFt5DzBRvHmXjUMG3DJTVlbl zPo4PHcd/kCpPn5NV81nI1LKkb0ewtXTDhTXxVyOwZQe6VDeANWOXTxYLGU09Vcap5BSadE2NZv UBogRnzIuUXIxSA== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE5MDA4OCBTYWx0ZWRfXy5BLfHeOZkll anA2GhxDmobtOC/tDdjEOMzOLQxns6Tgv9G2E3GCB0jaI3LZYmuympiTYUmDsYxXo8Q4wW5593j BRM+KwW+H7FhoZF2OOPiapg9eUlEKNwGO8/NuXv5/LyF2TeF8TirpRQW9P9hhyLqQQ3PI1EsxZk tcmCwNDZl7YeyTEyetgcWzeA21+JBQehQReUzUqCkNRweBzDSD9W1tKv3i8QnTjoot4RDpr1U7S GE4BbD8FOoS2Sy1pTxhrAXYlyt3B7XLrATTs013o2P2ZnsJeN+kaKI8rssju11tU9htwl9sHrv0 RJ+983qwS8GOIyIJX/9I/PHpodi8OVZmBzVWQZPvKxotOglAjmE51m748BsGszFL3+BnimMfXyU 5bYcOe2fTt3YylDh5B5fDtJAMXPFiScDY7eVfouq59F2oT0GrWaGSZN9IzAwAusXCuxNzTq04WI CWcRrcqOl4HZGxTQzOA== X-Authority-Analysis: v=2.4 cv=NY3rFmD4 c=1 sm=1 tr=0 ts=696e0a22 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=PolkbJsynZ_iw5VFs6kA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-ORIG-GUID: JbmiyZ7LER9DnQLmFLN3JTT8vT9YR1MT X-Proofpoint-GUID: JbmiyZ7LER9DnQLmFLN3JTT8vT9YR1MT X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-19_02,2026-01-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 phishscore=0 bulkscore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601190088 Status: O Provide a helper function allowing users to read the compatible string of the machine, hiding the access to the root node. Signed-off-by: Bartosz Golaszewski --- drivers/of/base.c | 13 +++++++++++++ include/linux/of.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/of/base.c b/drivers/of/base.c index 0b65039ece53aa90f30da2420a893a02ab4c6dd8..a7e27d5355929abd6d156b80c52f8f8b08fe6da1 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -434,6 +434,19 @@ bool of_machine_compatible_match(const char *const *compats) } EXPORT_SYMBOL(of_machine_compatible_match); +/** + * of_machine_get_compatible - Get the compatible string of this machine + * @compatible: address at which the compatible string will be stored + * + * Returns: + * 0 on success, negative error number on failure. + */ +int of_machine_get_compatible(const char **compatible) +{ + return of_property_read_string(of_root, "compatible", compatible); +} +EXPORT_SYMBOL_GPL(of_machine_get_compatible); + /** * of_machine_device_match - Test root of device tree against a of_device_id array * @matches: NULL terminated array of of_device_id match structures to search in diff --git a/include/linux/of.h b/include/linux/of.h index 9bbdcf25a2b448ba4ec5ddee8b35a105ca4aab8b..75423fb556ee4c108ce25144a0bdc252a89f7d1d 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -426,6 +426,8 @@ static inline bool of_machine_is_compatible(const char *compat) return of_machine_compatible_match(compats); } +int of_machine_get_compatible(const char **compatible); + extern int of_add_property(struct device_node *np, struct property *prop); extern int of_remove_property(struct device_node *np, struct property *prop); extern int of_update_property(struct device_node *np, struct property *newprop);