[PATCH 2/3] i2c: cht-wc: Add charger-chip info for the Lenovo Yoga Tab 3 YT3-X90F

Hans de Goede
2022-11-27T18:24:29Z

On x86 devices with a CHT Whiskey Cove PMIC the driver for
the I2C bus coming from the PMIC is responsible for instantiating
the i2c_client for the charger chip.

Add the necessary i2c_board_info for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/i2c/busses/i2c-cht-wc.c | 46 +++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)

diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c
index 190abdc46dd3..2b2c3d090089 100644
--- a/drivers/i2c/busses/i2c-cht-wc.c
+++ b/drivers/i2c/busses/i2c-cht-wc.c
@@ -380,6 +380,49 @@ static struct i2c_board_info lenovo_yogabook1_board_info = {
.platform_data = &bq2589x_pdata,
};

+/********** Lenovo Yogabook YT3-X90F charger settings **********/
+static const char * const lenovo_yt3_bq25892_1_suppliers[] = { "cht_wcove_pwrsrc" };
+
+/*
+ * bq25892 charger settings for the round li-ion cells in the hinge,
+ * this is the main / biggest battery.
+ */
+static const struct property_entry lenovo_yt3_bq25892_1_props[] = {
+ PROPERTY_ENTRY_STRING_ARRAY("supplied-from", lenovo_yt3_bq25892_1_suppliers),
+ PROPERTY_ENTRY_STRING("linux,secondary-charger-name", "bq25890-charger-0"),
+ PROPERTY_ENTRY_U32("linux,iinlim-percentage", 60),
+ PROPERTY_ENTRY_U32("linux,pump-express-vbus-max", 12000000),
+ PROPERTY_ENTRY_BOOL("linux,skip-reset"),
+ /*
+ * The firmware sets everything to the defaults, leading to a low(ish)
+ * charge-current and battery-voltage of 2048mA resp 4.2V. Use the
+ * Android values instead of "linux,read-back-settings" to fix this.
+ */
+ PROPERTY_ENTRY_U32("ti,charge-current", 3072000),
+ PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000),
+ PROPERTY_ENTRY_U32("ti,termination-current", 128000),
+ PROPERTY_ENTRY_U32("ti,precharge-current", 128000),
+ PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3700000),
+ PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"),
+ /* Set 5V boost current-limit to 1.2A (MAX/POR values are 2.45A/1.4A) */
+ PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000),
+ PROPERTY_ENTRY_U32("ti,boost-max-current", 1200000),
+ { }
+};
+
+static const struct software_node lenovo_yt3_bq25892_1_node = {
+ .properties = lenovo_yt3_bq25892_1_props,
+};
+
+/* bq25892 charger for the round li-ion cells in the hinge */
+static struct i2c_board_info lenovo_yoga_tab3_board_info = {
+ .type = "bq25892",
+ .addr = 0x6b,
+ .dev_name = "bq25892_1",
+ .swnode = &lenovo_yt3_bq25892_1_node,
+ .platform_data = &bq2589x_pdata,
+};
+
static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
@@ -459,6 +502,9 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
case INTEL_CHT_WC_LENOVO_YOGABOOK1:
board_info = &lenovo_yogabook1_board_info;
break;
+ case INTEL_CHT_WC_LENOVO_YT3_X90:
+ board_info = &lenovo_yoga_tab3_board_info;
+ break;
default:
dev_warn(&pdev->dev, "Unknown model, not instantiating charger device\n");
break;
--
2.38.1