PMI8996 is *almost* the same hardware as PMI8994, say for some annoyances:
- Boards equipped with PMI8996 now have to include pmic-id (which wasn't the
case before)
- Different qpnp-ibb-discharge-resistor value (will be addressed after LABIBB
is introduced)
- Different inhibit-derating-ua value (will be addressed after BCL is
introduced)
- Different ramp_up_step value (will be addressed after [if?] QPNP Flash LED
is introduced)
This DTSI is supposed to be included >>ON TOP OF<< pmi8994.dtsi, like this:
-- msm8996-nice-device.dts --
\#include "pmi8994.dtsi"
\#include "pmi8996.dtsi"
or more likely like this:
-- msm8996-some-phone.dts --
\#include "msm8996.dtsi"
...
\#include "pmi8994.dtsi"
-- msm8996-pmi8996-some-phone.dts --
\#include "msm8996-some-phone.dts"
\#include "pmi8996.dtsi"
So that we only have to keep 2 DTs for devices that were shipped with both
ones, instead of what would be three (device base + pmi8994 + pmi8996)
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxx>
---
changes since v2:
- Add a more explanatory commit message
arch/arm64/boot/dts/qcom/pmi8996.dtsi | 15 +++++++++++++++
1 file changed, 15 insertions(+)
create mode 100644 arch/arm64/boot/dts/qcom/pmi8996.dtsi
diff --git a/arch/arm64/boot/dts/qcom/pmi8996.dtsi b/arch/arm64/boot/dts/qcom/pmi8996.dtsi
new file mode 100644
index 000000000000..31b47209e261
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/pmi8996.dtsi
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxx>
+ */
+
+ /*
+ * PMI8996 is a slight modification of PMI8994 with
+ * some notable changes, like being the first PMIC
+ * whose the bootloader has to check to continue booting
+ * and a change to a LABIBB parameter.
+ */
+
+/ {
+ qcom,pmic-id = <0x20009 0x10013 0 0>;
+};
--
2.31.1
