Hi Padmarao, On Thu, Dec 3, 2020 at 4:43 AM Padmarao Begari <padmarao.beg...@microchip.com> wrote: > > dma_addr_t holds any valid DMA address. If the DMA API only uses 32/64-bit > addresses, dma_addr_t need only be 32/64 bits wide. > > Signed-off-by: Padmarao Begari <padmarao.beg...@microchip.com> > Reviewed-by: Anup Patel <anup.pa...@wdc.com> > --- > arch/riscv/Kconfig | 4 ++++ > arch/riscv/include/asm/types.h | 4 ++++ > 2 files changed, 8 insertions(+) > > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig > index 30b05408b1..55eaee2da6 100644 > --- a/arch/riscv/Kconfig > +++ b/arch/riscv/Kconfig > @@ -152,6 +152,10 @@ config 32BIT > config 64BIT > bool > > +config DMA_ADDR_T_64BIT > + bool > + default y if 64BIT > + > config SIFIVE_CLINT > bool > depends on RISCV_MMODE || SPL_RISCV_MMODE > diff --git a/arch/riscv/include/asm/types.h b/arch/riscv/include/asm/types.h > index 403cf9a48f..b800b2d221 100644 > --- a/arch/riscv/include/asm/types.h > +++ b/arch/riscv/include/asm/types.h > @@ -29,7 +29,11 @@ typedef unsigned short umode_t; > > #include <stddef.h> > > +#ifdef CONFIG_DMA_ADDR_T_64BIT > +typedef u64 dma_addr_t; > +#else > typedef u32 dma_addr_t; > +#endif
Why is this patch needed for U-Boot? Regards, Bin
