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serial: a37xx: Do not call get_ref_clk() in _debug_uart_init()

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Static inline function _debug_uart_init() should avoid calling external
(non-inline) functions. Therefore do not call get_ref_clk() in
_debug_uart_init() and reimplement its functionality without external
function calls.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2021-07-26 14:58:59 +02:00 committed by Stefan Roese
parent 5cd424d71f
commit 2cc4be280c
1 changed files with 3 additions and 1 deletions
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4
drivers/serial/serial_mvebu_a3700.c
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@ -305,6 +305,7 @@ U_BOOT_DRIVER(serial_mvebu) = {
#ifdef CONFIG_DEBUG_MVEBU_A3700_UART
#include <debug_uart.h>
#include <mach/soc.h>
static inline void _debug_uart_init(void)
{
@ -322,7 +323,8 @@ static inline void _debug_uart_init(void)
* Calculate divider
* baudrate = clock / 16 / divider
*/
parent_rate = get_ref_clk() * 1000000;
parent_rate = (readl(MVEBU_REGISTER(0x13808)) & BIT(9)) ?
40000000 : 25000000;
divider = DIV_ROUND_CLOSEST(parent_rate, CONFIG_BAUDRATE * 16);
writel(divider, base + UART_BAUD_REG);