On 9/28/20 7:23 AM, Joakim Zhang wrote: >>>> + for (i = 0; i < ram_init[0].len; i++) >>>> + priv->write(0, (void __iomem *)regs + ram_init[0].offset + >>>> +sizeof(u32) * i); >>> >>> As the write function only does endian conversion, and you're writing 0 >>> here. >>> What about using iowrite32_rep() and get rid of the for loop? >> >> Thanks for this point, I will update in next version. > > Ahhh.. I check iowrite32_rep() writes a buf to single address, no shift for > address.
Doh! Right. > I prefer to use memset_io() here to initialize a block of io memory. What do > you think? Of course, that's the correct function for this! regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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