[PATCH v2 3/3] sh: dma: Correct the number of DMA channels in SH7709
Artur Rojek <[email protected]>
| Newsgroups | gmane.linux.ports.sh.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
According to the hardware manual [1], the DMAC found in SH7709 features only 4 channels. While at it, also sort the existing targets and clarify that NR_ONCHIP_DMA_CHANNELS must be a multiply of two. [1] https://www.renesas.com/us/en/document/mah/sh7709s-group-hardware-manual (p. 373) Signed-off-by: Artur Rojek <[email protected]> --- v2: - sort existing targets - clarify that the value must be a multiply of two arch/sh/drivers/dma/Kconfig | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/sh/drivers/dma/Kconfig b/arch/sh/drivers/dma/Kconfig index 7d54f284ce10..382fbb189fcf 100644 --- a/arch/sh/drivers/dma/Kconfig +++ b/arch/sh/drivers/dma/Kconfig @@ -28,17 +28,19 @@ config SH_DMA_API config NR_ONCHIP_DMA_CHANNELS int depends on SH_DMA - default "4" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7751 || \ - CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7091 + default "4" if CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750 || \ + CPU_SUBTYPE_SH7750S || CPU_SUBTYPE_SH7751 || \ + CPU_SUBTYPE_SH7091 default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R || \ CPU_SUBTYPE_SH7760 - default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7780 || \ - CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7724 + default "12" if CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724 || \ + CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 default "6" help This allows you to specify the number of channels that the on-chip - DMAC supports. This will be 4 for SH7750/SH7751/Sh7750S/SH7091 and 8 for the - SH7750R/SH7751R/SH7760, 12 for the SH7723/SH7780/SH7785/SH7724, default is 6. + DMAC supports. This will be 4 for SH7709/SH7750/SH7750S/SH7751/SH7091, + 8 for SH7750R/SH7751R/SH7760, and 12 for SH7723/SH7724/SH7780/SH7785. + Default is 6. Must be an even number. config SH_DMABRG bool "SH7760 DMABRG support" -- 2.40.1