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This driver is currently used by STM32F7 and STM32H7 SoCs.
As CONFIG_CLK and OF_CONTROL flags are set by default for these
2 SoCs, this flag becomes useless in this driver, so remove it.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
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stm32f4 doesn't support FIFO and OVERRUN feature.
The enable bit is not at the same location in CR1
register than for STM32F7 and STM32H7.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
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Add fifo mode support for rx and tx.
As only STM32H7 supports this feature, add has_fifo flag
to uart configuration to use fifo only when possible.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
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STM32F4 serial IP is similar to F7 and H7, but registers
are not located at the same offset and some feature are
only supported by F7 and H7 version.
Registers offset must be added for each version and also
some flags indicated the supported feature.
Update registers name to match with datasheet (sr to isr,
rx_dr to rdr and tx_dr to tdr) and remove unused regs
(cr2, gtpr, rtor, and rqr).
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
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This patch remove the extra compatibility string "st,stm32h7-usart"
and "st,stm32f7-usart" to avoid confusion, save some time & space.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
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STM32F7 and STM32H7 shares the same UART block, add
STM32H7 compatible string.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Replace proprietary clock_get() by clk_get_rate()
The stm32x7 serial driver is now "generic" and can be used
by other STM32 SoCs.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
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This allow to remove include/dm/platform_data/serial_stm32x7.h
which was included in the past by stm32x7 driver and by
stm32f746-disco.c board file.
Since patch 42bf5e7c27 "serial: stm32f7: add device tree support"
this file is no more needed in board file.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
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Simplify baud rate register formula and use the oversampling
uart feature.
This code is aligned with what is implemented in kernel driver
drivers/tty/serial/stm32-usart.c since kernel v4.9.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Christophe KERELLO <christophe.kerello@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
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stm32x7.c driver is dedicated for STM32F7.
In kernel, "st,stm32-usart" and "st,stm32-uart" compatible
strings are dedicated for STM32F4.
To keep U-boot and kernel aligned, replace the serial compatible
string from "st,stm32-usart", "st,stm32-uart" to
"st,stm32f7-usart", "st,stm32f7-uart" specific for STM32F7.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Christophe KERELLO <christophe.kerello@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
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With overrun enabled, serial port console freezes & stops receiving data with
overun error if we keep sending data.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
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These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.
In the end we will have:
1. dev_read_addr...() - works on devices, supports flat/live tree
2. devfdt_get_addr...() - current functions, flat tree only
3. of_get_address() etc. - new functions, live tree only
All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.
Note this involves changing some dead code - the imx_lpi2c.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This patch adds device tree support for stm32f7 serial driver & removes serial
platform data structure.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This patch adds 200MHz clock configuration for stm32f746 discovery board.
This patch is based on STM32F4 and emcraft's[1].
[1]: https://github.com/EmcraftSystems/u-boot
Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com>
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This patch adds support for stm32f7 family usart peripheral.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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