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From: Konrad Dybcio <konrad.dybcio@somainline.org>
To: ~postmarketos/upstreaming@lists.sr.ht
Cc: martin.botka@somainline.org,
	angelogioacchino.delregno@somainline.org,
	marijn.suijten@somainline.org, jamipkettunen@somainline.org,
	Konrad Dybcio <konrad.dybcio@somainline.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 1/3] arm64: dts: qcom: Add PMI8996 DTSI file
Date: Tue,  8 Jun 2021 17:27:34 +0200	[thread overview]
Message-ID: <20210608152737.154218-1-konrad.dybcio@somainline.org> (raw)

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@somainline.org>
---
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@somainline.org>
+ */
+
+ /*
+  * 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


             reply	other threads:[~2021-06-08 15:27 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08 15:27 Konrad Dybcio [this message]
2021-06-08 15:27 ` [PATCH v3 2/3] arm64: dts: qcom: Add MSM8996v3.0 " Konrad Dybcio
2021-06-08 15:27 ` [PATCH v3 3/3] arm64: dts: qcom: Add support for SONY Xperia X Performance / XZ / XZs (msm8996, Tone platform) Konrad Dybcio
2021-06-08 16:39   ` Stephan Gerhold
2021-06-08 19:08     ` Konrad Dybcio
2021-06-08 19:47       ` Bjorn Andersson

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