Commit f32a8007ef0f ("dm: i2c: Make i2c_get_chip_for_busnum() fail if the
chip is not detected") introduced a regression for the NVIDIA Jetson TX2.
For some reason the xfer callback of the tegra i2c driver doesn't support
probing the I2C devices with a 0-length message.
Fixing the regression by providing a dummy implementation of probe_chip()
that does nothing.
Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com>
Tested-by: Stephen Warren <swar...@nvidia.com>
---
drivers/i2c/tegra186_bpmp_i2c.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/i2c/tegra186_bpmp_i2c.c b/drivers/i2c/tegra186_bpmp_i2c.c
index b4fff43..793f3f5 100644
--- a/drivers/i2c/tegra186_bpmp_i2c.c
+++ b/drivers/i2c/tegra186_bpmp_i2c.c
@@ -85,6 +85,12 @@ static int tegra186_bpmp_i2c_xfer(struct udevice *dev,
struct i2c_msg *msg,
return 0;
}
+static int tegra186_bpmp_probe_chip(struct udevice *bus, uint chip_addr,
+ uint chip_flags)
+{
+ return 0;
+}
+
static int tegra186_bpmp_i2c_probe(struct udevice *dev)
{
struct tegra186_bpmp_i2c *priv = dev_get_priv(dev);
@@ -101,6 +107,7 @@ static int tegra186_bpmp_i2c_probe(struct udevice *dev)
static const struct dm_i2c_ops tegra186_bpmp_i2c_ops = {
.xfer = tegra186_bpmp_i2c_xfer,
+ .probe_chip = tegra186_bpmp_probe_chip,
};
static const struct udevice_id tegra186_bpmp_i2c_ids[] = {
--
2.7.4
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