Commit 346e400c authored by Jan Glauber's avatar Jan Glauber Committed by Wolfram Sang

i2c: thunderx: ACPI support for clock settings

Add support for reading the system clock and the TWSI clock
frequency from ACPI DSDT.

TWSI clock was already covered by using device_property_read().
Signed-off-by: default avatarJan Glauber <jglauber@cavium.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 4165bd4b
......@@ -85,6 +85,8 @@ static void thunder_i2c_clock_enable(struct device *dev, struct octeon_i2c *i2c)
{
int ret;
if (acpi_disabled) {
/* DT */
i2c->clk = clk_get(dev, NULL);
if (IS_ERR(i2c->clk)) {
i2c->clk = NULL;
......@@ -95,6 +97,10 @@ static void thunder_i2c_clock_enable(struct device *dev, struct octeon_i2c *i2c)
if (ret)
goto skip;
i2c->sys_freq = clk_get_rate(i2c->clk);
} else {
/* ACPI */
device_property_read_u32(dev, "sclk", &i2c->sys_freq);
}
skip:
if (!i2c->sys_freq)
......
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