From 2f0b45f846735b486c0383740d3959941c4721a4 Mon Sep 17 00:00:00 2001 From: John Linn Date: Thu, 3 Apr 2008 03:52:14 +1100 Subject: [PATCH] [POWERPC] Xilinx: boot support for Xilinx uart 16550. The Xilinx 16550 uart core is not a standard 16550 because it uses word-based addressing rather than byte-based adressing. With additional properties it is compatible with the open firmware 'ns16550' compatible binding. This code updates the ns16550 driver to use the reg-offset property so that the Xilinx UART 16550 can be used with it. The reg-shift was already being handled. Signed-off-by: John Linn Acked-by: Grant Likely Signed-off-by: Josh Boyer --- arch/powerpc/boot/ns16550.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/powerpc/boot/ns16550.c b/arch/powerpc/boot/ns16550.c index aef3bdc89160..8c9ead94be06 100644 --- a/arch/powerpc/boot/ns16550.c +++ b/arch/powerpc/boot/ns16550.c @@ -55,10 +55,15 @@ static u8 ns16550_tstc(void) int ns16550_console_init(void *devp, struct serial_console_data *scdp) { int n; + u32 reg_offset; if (dt_get_virtual_reg(devp, (void **)®_base, 1) < 1) return -1; + n = getprop(devp, "reg-offset", ®_offset, sizeof(reg_offset)); + if (n == sizeof(reg_offset)) + reg_base += reg_offset; + n = getprop(devp, "reg-shift", ®_shift, sizeof(reg_shift)); if (n != sizeof(reg_shift)) reg_shift = 0; -- 2.20.1