Eric Lee / smarc-uboot

Download as
Browse Code »

Commit 24f85482c90227d6ba4cc3739874bae7e8969a62

Authored by Álvaro Fernández Rojas
Committed by Daniel Schwierzeck
1 parent 6b7185f3ee
Exists in smarc_8mq_lf_v2020.04 and in 17 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc-imx6_v2018.03_4.14.98_2.0.0_ga, smarc-imx7_v2018.03_4.14.98_2.0.0_ga, smarc-imx_v2018.03_4.14.78_1.0.0_ga, smarc_8m-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8m_00d0-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2018.03_4.14.98_2.0.0_ga, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0

dm: serial: bcm6345: fix baud rate clock calculation 

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>

Showing 1 changed file with 4 additions and 4 deletions Side-by-side Diff

drivers/serial/serial_bcm6345.c
Diff comments   View file @ 24f8548
... ... @@ -157,11 +157,11 @@
157 157 UART_FIFO_CFG_TX_4);
158 158  
159 159 /* set baud rate */
160   - val = (clk / baudrate) / 16;
  160 + val = ((clk / baudrate) >> 4);
161 161 if (val & 0x1)
162   - val = val;
  162 + val = (val >> 1);
163 163 else
164   - val = val / 2 - 1;
  164 + val = (val >> 1) - 1;
165 165 writel_be(val, base + UART_BAUD_REG);
166 166  
167 167 /* clear interrupts */
... ... @@ -243,7 +243,7 @@
243 243 ret = clk_get_by_index(dev, 0, &clk);
244 244 if (ret < 0)
245 245 return ret;
246   - priv->uartclk = clk_get_rate(&clk) / 2;
  246 + priv->uartclk = clk_get_rate(&clk);
247 247 clk_free(&clk);
248 248  
249 249 /* initialize serial */