Re: CVS commit: src/sys

#if defined(CONFIG_ARCH_SUN8IW12) \
	|| defined(CONFIG_ARCH_SUN8IW15) \
	|| defined(CONFIG_ARCH_SUN50IW3) \
	|| defined(CONFIG_ARCH_SUN50IW6)
#define SUNXI_UART_FIFO_SIZE		256
#elif defined(CONFIG_ARCH_SUN3IW1)
#define SUNXI_UART_FIFO_SIZE		32
#else
#define SUNXI_UART_FIFO_SIZE		64
#endif

sun8iw12 = V5/V100

sun8iw15 = R311/A50

sun50iw3 = A63

sun50iw6 = H6

sun3iw1 = handful of ARM926EJ-S things we don’t support

Take care,

Jared

On Jul 31, 2021, at 7:17 AM, Tobias Nygren <tnn%NetBSD.org@localhost> wrote:

On Fri, 30 Jul 2021 22:36:45 +0200
Tobias Nygren <tnn%NetBSD.org@localhost> wrote:

On Fri, 30 Jul 2021 17:25:46 -0300 (ADT)
Jared McNeill <jmcneill%invisible.ca@localhost> wrote:

Why only A20?

It is the hardware I have on hand. If you know specifically which
SoCs need this, the compat_data array can be extended.
I guess maybe these also?
allwinner,sun4i-a10
allwinner,sun6i-a31

Apparently it can be an issue on relatively speaking newer SoCs too.
For example the H6 does not have DesignWare specific register,
and comes with 256-byte FIFO instead of 64-byte.

It's not possible to deduce from the manual what DesignWare revision
is used but I guess I can go over the data sheets of currently
released SoCs and build a matrix of the proper values regardless
of DesignWare revision.