Hi Ben I've made one change (below) and updated the patch CONFIG_RZ_DMAC=y ( from CONFIG_RZ_DMAC=m) The reason being the DMA engine is core device, this needs to be enabled for the serial device to be working and hence it needs to be built in.
I've updated the config enabled based on the groups for the reference: ## ## file: drivers/clocksource/Kconfig ## CONFIG_RENESAS_OSTM=y ## ## file: drivers/dma/sh/Kconfig ## CONFIG_RZ_DMAC=y ## ## file: drivers/gpu/drm/renesas/rcar-du/Kconfig ## CONFIG_DRM_RCAR_DU=m CONFIG_DRM_RCAR_VSP=m CONFIG_DRM_RCAR_CMM=m CONFIG_DRM_RCAR_DW_HDMI=m CONFIG_DRM_RCAR_LVD=m CONFIG_DRM_RCAR_MIPI_DSI=m ## ## file: drivers/i2c/busses/Kconfig ## CONFIG_I2C_RCAR=m ## ## file: drivers/iio/adc/Kconfig ## CONFIG_RZG2L_ADC=m ## ## file: drivers/media/platform/renesas/Kconfig ## CONFIG_VIDEO_RENESAS_FCP=m CONFIG_VIDEO_RENESAS_FDP1=m CONFIG_VIDEO_RENESAS_VSP1=m CONFIG_VIDEO_RCAR_ISP=m CONFIG_VIDEO_RCAR_DRIF=m ## ## drivers/media/platform/renesas/rzg2l-cru/Kconfig ## CONFIG_VIDEO_RZG2L_CRU=m CONFIG_VIDEO_RZG2L_CSI2=m ## ## file: drivers/media/platform/renesas/rcar-vin/Kconfig ## CONFIG_VIDEO_RCAR_CSI2=m CONFIG_VIDEO_RCAR_VIN=m ## ## file: drivers/mmc/host/Kconfig ## CONFIG_MMC_SDHI_SYS_DMAC=m CONFIG_MMC_SDHI_INTERNAL_DMAC=m ## ## file: drivers/net/ethernet/renesas/Kconfig ## CONFIG_RENESAS_GEN4_PTP=m ## ## file: drivers/phy/renesas/Kconfig ## CONFIG_PHY_RCAR_GEN3_USB3=m ## ## file: drivers/pwm/Kconfig ## CONFIG_PWM_RCAR=m ## ## file: drivers/thermal/Kconfig ## CONFIG_RZG2L_THERMAL=m ## ## file: drivers/watchdog/Kconfig ## CONFIG_RENESAS_RZG2LWDT=m Best Regards John -----Original Message----- From: John Vincent Sent: 18 November 2025 19:40 To: Ben Hutchings <[email protected]>; [email protected] Cc: Tim Hartley <[email protected]> Subject: RE: Bug#1120854: linux-image-arm64: Enable dma engine for Renesas RZ platform Hi Ben I've updated the patch file to include additional configs. - DMA: RZ DMAC (CONFIG_RZ_DMAC) - Display: DRM R-Car DU, VSP, HDMI, MIPI DSI, CMM, LVD - Media: FCP, FDP1, VSP1, CRU, CSI2, VIN, ISP, DRIF - I2C: R-Car I2C controller - MMC: SDHI with SYS_DMAC and INTERNAL_DMAC - PHY: USB3 support for R-Car Gen3 - PWM: R-Car PWM controller - Watchdog: Renesas WDT - Clock source: Renesas OSTM - Ethernet : Gen4 PTP - ADC: RZ ADC - Thermal: RZ Thermal Best Regards John -----Original Message----- From: Ben Hutchings <[email protected]> Sent: 17 November 2025 19:39 To: John Vincent <[email protected]>; [email protected] Subject: Re: Bug#1120854: linux-image-arm64: Enable dma engine for Renesas RZ platform Control: tag -1 - d-i upstream Control: tag -1 moreinfo On Mon, 2025-11-17 at 15:15 +0000, John Vincent wrote: > Package: linux-image-arm64 > Version: Trixie > Severity: normal > Tags: d-i patch upstream > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > For RZ platform the DMA engine needs enabling using the kernel config: > > CONFIG_RZ_DMAC=m > > Please support to enable this config in debian kernel config: > > https://salsa.debian.org/kernel-team/linux/-/blob/debian/latest/debian > /config/arm64/config [...] This is the second bug you've opened requesting a single driver for the RZ platform. Can you provide a list of *all* the drivers that should be enabled? From a quick look through the Kconfig files it seems like we are also missing RTC, watchdog, PWM, reset, DRM, and other drivers. Ben. -- Ben Hutchings If the facts do not conform to your theory, they must be disposed of. ________________________________ Renesas Electronics Europe GmbH Registered Office: Arcadiastrasse 10 DE-40472 Duesseldorf Commercial Registry: Duesseldorf, HRB 3708 Managing Director: Carsten Jauch VAT-No.: DE 14978647 Tax-ID-No: 105/5839/1793 Legal Disclaimer: This e-mail communication (and any attachment/s) is confidential and contains proprietary information, some or all of which may be legally privileged. It is intended solely for the use of the individual or entity to which it is addressed. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful.
0001-arm64-Enable-Renesas-RZ-G2L-multimedia-and-periphera.patch
Description: 0001-arm64-Enable-Renesas-RZ-G2L-multimedia-and-periphera.patch
