Hi Andrei,
On 30/09/2024 12:47, Andrei Cherechesu (OSS) wrote:
+static void __init linflex_uart_init_preirq(struct serial_port *port)
+{
+ struct linflex_uart *uart = port->uart;
+ uint32_t ibr, fbr, divisr, dividr, ctrl;
+
+ /* Disable RX/TX before init mode */
+ ctrl = linflex_uart_readl(uart, UARTCR);
+ ctrl &= ~(UARTCR_RXEN | UARTCR_TXEN);
+ linflex_uart_writel(uart, UARTCR, ctrl);
+
+ /*
+ * Smoothen the transition from early_printk by waiting
+ * for all pending characters to transmit
+ */
Just to note that early_printk() will still be used by secondary CPUs
when booting which happens after init_preirq() is called. Will this be a
problem for you?
I haven't compared the code against the specification. But the logic
LGTM from a Xen PoV. So:
Acked-by: Julien Grall <jgr...@amazon.com>
Cheers,
--
Julien Grall
