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dm: serial: bcm6345: fix baud rate clock calculation

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It's currently bugged and doesn't work for even cases.
Right shift bits instead of dividing and fix even cases.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2017-05-22 20:01:46 +02:00 committed by Daniel Schwierzeck
parent 6b7185f3ee
commit 24f85482c9
1 changed files with 4 additions and 4 deletions
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8
drivers/serial/serial_bcm6345.c
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@ -157,11 +157,11 @@ static int bcm6345_serial_init(void __iomem *base, ulong clk, u32 baudrate)
UART_FIFO_CFG_TX_4); UART_FIFO_CFG_TX_4);
/* set baud rate */ /* set baud rate */
val = (clk / baudrate) / 16; val = ((clk / baudrate) >> 4);
if (val & 0x1) if (val & 0x1)
val = val; val = (val >> 1);
else else
val = val / 2 - 1; val = (val >> 1) - 1;
writel_be(val, base + UART_BAUD_REG); writel_be(val, base + UART_BAUD_REG);
/* clear interrupts */ /* clear interrupts */
@ -243,7 +243,7 @@ static int bcm6345_serial_probe(struct udevice *dev)
ret = clk_get_by_index(dev, 0, &clk); ret = clk_get_by_index(dev, 0, &clk);
if (ret < 0) if (ret < 0)
return ret; return ret;
priv->uartclk = clk_get_rate(&clk) / 2; priv->uartclk = clk_get_rate(&clk);
clk_free(&clk); clk_free(&clk);
/* initialize serial */ /* initialize serial */