i2c: qcom-geni: add support for I2C Master Hub variant

Bugzilla: https://bugzilla.redhat.com/2164495

commit cacd964
Author: Neil Armstrong <neil.armstrong@linaro.org>
Date:   Tue Nov 29 15:47:06 2022 +0100

    i2c: qcom-geni: add support for I2C Master Hub variant

    The I2C Master Hub is a stripped down version of the GENI Serial Engine
    QUP Wrapper Controller but only supporting I2C serial engines without
    DMA support.

    Add the I2C Master Hub serial engine compatible along the specific
    requirements in a new desc struct passed through the device match data.

    Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
    Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
    Signed-off-by: Wolfram Sang <wsa@kernel.org>
    Signed-off-by: Andrew Halaney <ahalaney@redhat.com>

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>

Author: ahalaney

drivers/i2c/busses/i2c-qcom-geni.c

@@ -1025,8 +1025,16 @@ static const struct dev_pm_ops geni_i2c_pm_ops = {
 									NULL)
 };
 
+const struct geni_i2c_desc i2c_master_hub = {
+	.has_core_clk = true,
+	.icc_ddr = NULL,
+	.no_dma_support = true,
+	.tx_fifo_depth = 16,
+};
+
 static const struct of_device_id geni_i2c_dt_match[] = {
 	{ .compatible = "qcom,geni-i2c" },
+	{ .compatible = "qcom,geni-i2c-master-hub", .data = &i2c_master_hub },
 	{}
 };
 MODULE_DEVICE_TABLE(of, geni_i2c_dt_match);