+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2017 - Beniamino Galvani <b.galvani@gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
-#include <asm/arch/i2c.h>
#include <asm/io.h>
+#include <clk.h>
#include <dm.h>
#include <i2c.h>
};
struct meson_i2c {
+ struct clk clk;
struct i2c_regs *regs;
struct i2c_msg *msg; /* Current I2C message */
bool last; /* Whether the message is the last */
static int meson_i2c_set_bus_speed(struct udevice *bus, unsigned int speed)
{
struct meson_i2c *i2c = dev_get_priv(bus);
- unsigned int clk_rate = MESON_I2C_CLK_RATE;
+ ulong clk_rate;
unsigned int div;
+ clk_rate = clk_get_rate(&i2c->clk);
+ if (IS_ERR_VALUE(clk_rate))
+ return -EINVAL;
+
div = DIV_ROUND_UP(clk_rate, speed * 4);
/* clock divider has 12 bits */
clrsetbits_le32(&i2c->regs->ctrl, REG_CTRL_CLKDIVEXT_MASK,
(div >> 10) << REG_CTRL_CLKDIVEXT_SHIFT);
- debug("meson i2c: set clk %u, src %u, div %u\n", speed, clk_rate, div);
+ debug("meson i2c: set clk %u, src %lu, div %u\n", speed, clk_rate, div);
return 0;
}
static int meson_i2c_probe(struct udevice *bus)
{
struct meson_i2c *i2c = dev_get_priv(bus);
+ int ret;
+
+ ret = clk_get_by_index(bus, 0, &i2c->clk);
+ if (ret < 0)
+ return ret;
+
+ ret = clk_enable(&i2c->clk);
+ if (ret)
+ return ret;
i2c->regs = dev_read_addr_ptr(bus);
clrbits_le32(&i2c->regs->ctrl, REG_CTRL_START);