[PATCHv3 0/3] Fix hardware handshake on SAM9x5 platforms

Since commit 1cf6e8fc8341 ("tty/serial: at91: fix RTS line management when hardware handshake is enabled"), hardware handshake is not working anymore on SAM9x5/SAMA5D3/SAM9 platforms. The first two patches fix the hardware handshake when CTS/RTS pins are handled by GPIOs. The last patch fixes

[PATCHv3 0/3] Fix hardware handshake on SAM9x5 platforms

Since commit 1cf6e8fc8341 ("tty/serial: at91: fix RTS line management when hardware handshake is enabled"), hardware handshake is not working anymore on SAM9x5/SAMA5D3/SAM9 platforms. The first two patches fix the hardware handshake when CTS/RTS pins are handled by GPIOs. The last patch fixes