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Mon, 19 Oct 2026 05:59:31 -0700 (PDT) Received: from eichest-laptop.toradex.int ([2a02:168:af72::cb4]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a1d30d778bsm264696755e9.9.2026.10.19.05.59.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Oct 2026 05:59:30 -0700 (PDT) From: Stefan Eichenberger To: trini@konsulko.com, ilias.apalodimas@linaro.org, sbabic@nabladev.com, festevam@gmail.com, uboot-imx@nxp.com, stefan.eichenberger@toradex.com, francesco.dolcini@toradex.com Cc: u-boot@lists.u-boot-project.org Subject: [PATCH v1 0/2] imx: mach: imx8: fdt: fix industrial GPU frequencies Date: Mon, 19 Oct 2026 14:58:51 +0200 Message-ID: <20261019125930.111608-1-eichest@gmail.com> X-Mailer: git-send-email 2.56.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Mon, 19 Oct 2026 13:23:57 +0000 X-BeenThere: u-boot@lists.u-boot-project.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.u-boot-project.org On the industrial i.MX 8 variant, U-Boot limits the GPU clocks to 625 MHz by patching the device tree of the kernel. This series fixes two issues with that code. The first patch makes the helpers return the libfdt error codes, so missing nodes are ignored again and real errors are printed with a meaningful message. Before, booting a device tree without the GPU1 nodes printed a misleading error: Failed to set assigned-clock-rates for GPU1: FDT_ERR_BADPHANDLE The second patch adds support for the GPU0 bus node name used by mainline Linux and NXP downstream kernels starting with 6.18 (bus@53000000 instead of bus@53100000). Without it, GPU0 runs at the default 700/850 MHz instead of the 625 MHz limit of the industrial SoC. Stefan Eichenberger (2): imx: mach: imx8: fdt: return libfdt errors from helpers imx: mach: imx8: fdt: support newer GPU0 bus node name arch/arm/mach-imx/imx8/fdt.c | 35 +++++++++++++++-------------------- 1 file changed, 15 insertions(+), 20 deletions(-) -- 2.56.0