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On 27/07/26 09:43, Kumar, Udit wrote: > > > On 7/13/2026 5:04 PM, Yemike Abhilash Chandra wrote: >> From: Vaishnav Achath >> >> J721E CSI2RX SHIM layer can support up to 32 DMA channel contexts. Add >> additional DMA channels to enable multistream support for CSI2RX. >> > > If hardware supports 32 channel, then why you are limiting to 16 > channels only ? While the J721E CSI2RX SHIM IP supports up to 32 DMA channel contexts, in the current RM configuration, only 16[1] BCDMA RX channels are allocated to the Linux host for CSI2RX. Hence added channels accordingly. Thanks and Regards, Yemike Abhilash Chandra [1]: https://github.com/u-boot/u-boot/blob/main/board/ti/j721e/rm-cfg.yaml#L1205 >> Signed-off-by: Vaishnav Achath >> Signed-off-by: Yemike Abhilash Chandra >> --- >> arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 20 ++++++++++++++++---- >> 1 file changed, 16 insertions(+), 4 deletions(-) >> >> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi >> index 5a8414fc5751..b1988437f52d 100644 >> --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi >> +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi >> @@ -600,8 +600,14 @@ ti_csi2rx0: ticsi2rx@4500000 { >> ranges; >> #address-cells = <2>; >> #size-cells = <2>; >> - dmas = <&main_udmap 0x4940>; >> - dma-names = "rx0"; >> + dmas = <&main_udmap 0x4940>, <&main_udmap 0x4941>, <&main_udmap 0x4942>, >> + <&main_udmap 0x4943>, <&main_udmap 0x4944>, <&main_udmap 0x4945>, >> + <&main_udmap 0x4946>, <&main_udmap 0x4947>, <&main_udmap 0x4948>, >> + <&main_udmap 0x4949>, <&main_udmap 0x494a>, <&main_udmap 0x494b>, >> + <&main_udmap 0x494c>, <&main_udmap 0x494d>, <&main_udmap 0x494e>, >> + <&main_udmap 0x494f>; >> + dma-names = "rx0", "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", >> + "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", "rx14", "rx15"; >> power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>; >> status = "disabled"; >> >> @@ -656,8 +662,14 @@ ti_csi2rx1: ticsi2rx@4510000 { >> ranges; >> #address-cells = <2>; >> #size-cells = <2>; >> - dmas = <&main_udmap 0x4960>; >> - dma-names = "rx0"; >> + dmas = <&main_udmap 0x4960>, <&main_udmap 0x4961>, <&main_udmap 0x4962>, >> + <&main_udmap 0x4963>, <&main_udmap 0x4964>, <&main_udmap 0x4965>, >> + <&main_udmap 0x4966>, <&main_udmap 0x4967>, <&main_udmap 0x4968>, >> + <&main_udmap 0x4969>, <&main_udmap 0x496a>, <&main_udmap 0x496b>, >> + <&main_udmap 0x496c>, <&main_udmap 0x496d>, <&main_udmap 0x496e>, >> + <&main_udmap 0x496f>; >> + dma-names = "rx0", "rx1", "rx2", "rx3", "rx4", "rx5", "rx6", "rx7", >> + "rx8", "rx9", "rx10", "rx11", "rx12", "rx13", "rx14", "rx15"; >> power-domains = <&k3_pds 27 TI_SCI_PD_EXCLUSIVE>; >> status = "disabled"; >> >