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| author | Icenowy Zheng <icenowy@aosc.io> | 2018-07-22 21:29:02 +0800 |
|---|---|---|
| committer | Icenowy Zheng <icenowy@aosc.io> | 2018-09-07 22:13:06 +0800 |
| commit | 5686b2eca292c9e96c1f18c5b81848053a782ed2 (patch) | |
| tree | ee5d7c666bdd6f41fb779ff1b4252023b653b261 /drivers/allwinner | |
| parent | 207199141312018cf9560fba32ae421324f041cb (diff) | |
| download | platform_external_arm-trusted-firmware-5686b2eca292c9e96c1f18c5b81848053a782ed2.tar.gz platform_external_arm-trusted-firmware-5686b2eca292c9e96c1f18c5b81848053a782ed2.tar.bz2 platform_external_arm-trusted-firmware-5686b2eca292c9e96c1f18c5b81848053a782ed2.zip | |
allwinner: add I2C glue driver
Allwinner 64-bit SoCs all use the Mentor Graphics MI2CV I2C controller
core, with inverted clear quirk.
Add a glue driver for this.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Diffstat (limited to 'drivers/allwinner')
| -rw-r--r-- | drivers/allwinner/sunxi_i2c.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/allwinner/sunxi_i2c.c b/drivers/allwinner/sunxi_i2c.c new file mode 100644 index 000000000..cc91ca58a --- /dev/null +++ b/drivers/allwinner/sunxi_i2c.c @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2018 Icenowy Zheng <icenowy@aosc.io> + * + * SPDX-License-Identifier: BSD-3-Clause + * https://spdx.org/licenses + */ + +/* This driver provides I2C support for Allwinner sunXi SoCs */ + +#include <mmio.h> + +#define CONFIG_SYS_TCLK 24000000 +#define CONFIG_SYS_I2C_SPEED 100000 +#define CONFIG_SYS_I2C_SLAVE 0 + +#define I2C_INTERRUPT_CLEAR_INVERTED + +struct mentor_i2c_regs { + uint32_t slave_address; + uint32_t xtnd_slave_addr; + uint32_t data; + uint32_t control; + uint32_t status; + uint32_t baudrate; + uint32_t soft_reset; +}; + +#include "../mentor/i2c/mi2cv.c" |