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/kernel/linux/linux-6.6/arch/arm/boot/dts/st/
Dstih407-family.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
6 #include "stih407-pinctrl.dtsi"
7 #include <dt-bindings/mfd/st-lpc.h>
8 #include <dt-bindings/phy/phy.h>
9 #include <dt-bindings/reset/stih407-resets.h>
10 #include <dt-bindings/interrupt-controller/irq-st.h>
12 #address-cells = <1>;
13 #size-cells = <1>;
15 reserved-memory {
16 #address-cells = <1>;
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/kernel/linux/linux-5.10/arch/arm/boot/dts/
Dstih407-family.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
6 #include "stih407-pinctrl.dtsi"
7 #include <dt-bindings/mfd/st-lpc.h>
8 #include <dt-bindings/phy/phy.h>
9 #include <dt-bindings/reset/stih407-resets.h>
10 #include <dt-bindings/interrupt-controller/irq-st.h>
12 #address-cells = <1>;
13 #size-cells = <1>;
15 reserved-memory {
16 #address-cells = <1>;
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/kernel/linux/linux-5.10/Documentation/devicetree/bindings/i2c/
Di2c-st.txt1 ST SSC binding, for I2C mode operation
4 - compatible : Must be "st,comms-ssc-i2c" or "st,comms-ssc4-i2c"
5 - reg : Offset and length of the register set for the device
6 - interrupts : the interrupt specifier
7 - clock-names: Must contain "ssc".
8 - clocks: Must contain an entry for each name in clock-names. See the common
10 - A pinctrl state named "default" must be defined to set pins in mode of
11 operation for I2C transfer.
14 - clock-frequency : Desired I2C bus clock frequency in Hz. If not specified,
17 - st,i2c-min-scl-pulse-width-us : The minimum valid SCL pulse width that is
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/kernel/linux/linux-6.6/Documentation/devicetree/bindings/i2c/
Dst,sti-i2c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/st,sti-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: I2C controller embedded in STMicroelectronics STi platform
10 - Patrice Chotard <patrice.chotard@foss.st.com>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - st,comms-ssc-i2c
19 - st,comms-ssc4-i2c
30 clock-names:
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/kernel/linux/linux-5.10/drivers/i2c/busses/
Di2c-st.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * I2C master mode controller driver, used in STMicroelectronics devices.
13 #include <linux/i2c.h>
93 /* SSC I2C Control */
130 * struct st_i2c_timings - per-Mode tuning parameters
131 * @rate: I2C bus rate
132 * @rep_start_hold: I2C repeated start hold time requirement
133 * @rep_start_setup: I2C repeated start set up time requirement
134 * @start_hold: I2C start hold time requirement
135 * @data_setup_time: I2C data set up time requirement
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/kernel/linux/linux-6.6/drivers/i2c/busses/
Di2c-st.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * I2C master mode controller driver, used in STMicroelectronics devices.
13 #include <linux/i2c.h>
93 /* SSC I2C Control */
130 * struct st_i2c_timings - per-Mode tuning parameters
131 * @rate: I2C bus rate
132 * @rep_start_hold: I2C repeated start hold time requirement
133 * @rep_start_setup: I2C repeated start set up time requirement
134 * @start_hold: I2C start hold time requirement
135 * @data_setup_time: I2C data set up time requirement
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/kernel/linux/linux-5.10/drivers/spi/
Dspi-st-ssc4.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2008-2014 STMicroelectronics Limited
75 if (spi_st->words_remaining > FIFO_SIZE) in ssc_write_tx_fifo()
78 count = spi_st->words_remaining; in ssc_write_tx_fifo()
81 if (spi_st->tx_ptr) { in ssc_write_tx_fifo()
82 if (spi_st->bytes_per_word == 1) { in ssc_write_tx_fifo()
83 word = *spi_st->tx_ptr++; in ssc_write_tx_fifo()
85 word = *spi_st->tx_ptr++; in ssc_write_tx_fifo()
86 word = *spi_st->tx_ptr++ | (word << 8); in ssc_write_tx_fifo()
89 writel_relaxed(word, spi_st->base + SSC_TBUF); in ssc_write_tx_fifo()
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/kernel/linux/linux-6.6/drivers/spi/
Dspi-st-ssc4.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2008-2014 STMicroelectronics Limited
74 if (spi_st->words_remaining > FIFO_SIZE) in ssc_write_tx_fifo()
77 count = spi_st->words_remaining; in ssc_write_tx_fifo()
80 if (spi_st->tx_ptr) { in ssc_write_tx_fifo()
81 if (spi_st->bytes_per_word == 1) { in ssc_write_tx_fifo()
82 word = *spi_st->tx_ptr++; in ssc_write_tx_fifo()
84 word = *spi_st->tx_ptr++; in ssc_write_tx_fifo()
85 word = *spi_st->tx_ptr++ | (word << 8); in ssc_write_tx_fifo()
88 writel_relaxed(word, spi_st->base + SSC_TBUF); in ssc_write_tx_fifo()
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