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Message-Id: <20240716103025.1198495-1-claudiu.beznea.uj@bp.renesas.com>
Date: Tue, 16 Jul 2024 13:30:14 +0300
From: Claudiu <claudiu.beznea@...on.dev>
To: lee@...nel.org,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org,
alexandre.belloni@...tlin.com,
geert+renesas@...der.be,
magnus.damm@...il.com,
mturquette@...libre.com,
sboyd@...nel.org,
p.zabel@...gutronix.de
Cc: devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-rtc@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-clk@...r.kernel.org,
claudiu.beznea@...on.dev,
Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v2 00/11] Add RTC support for the Renesas RZ/G3S SoC
From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Hi,
On the Renesas RZ/G3S SoC the RTC clock is provided by the VBATTB
IP. A 32 KHz crystall oscillator could be connected to the VBATTB
input pins. The logic to control this clock (and pass it to RTC)
is inside the VBATTB IP. For this, the clk-vbattb driver was added
(patches 01-03/11).
Patches 04-05/11 add the RTC driver.
Patches 06-09/11 update the device trees with proper nodes to enable RTC.
Patches 10-11/11 enable proper config flags for RTC to work on RZ/G3S SoC.
Thank you,
Claudiu Beznea
Changes in v2:
- dropped patch "clk: renesas: r9a08g045: Add clock, reset and power domain
support for the VBATTB IP" as it was already integrated
- kept only a documentation file for both VBATT MFD and clock drivers as
suggested
- addressed review comments
- used cleanup.h lock helpers
- update startup sequence for the RTC driver
- switch to 24 hours mode on the RTC driver
- fixed range for the RTC driver
- added a generic compatible for the RTC driver as this will also be
used by RZ/V2H
- used clkin/xin clock names for the VBATTB clock driver to determine
if bypass should be configured on registers instead of having
dedicated DT property
- added mfd driver for VBATTB
- updated Kconfig flag names to include vendor name
- removed DT node labels from Documentation files
- used items to describe the interrupts and clocks
Claudiu Beznea (11):
dt-bindings: mfd: renesas,r9a08g045-vbattb: Document VBATTB
mfd: renesas-vbattb: Add a MFD driver for the Renesas VBATTB IP
clk: renesas: clk-vbattb: Add VBATTB clock driver
dt-bindings: rtc: renesas,rzg3s-rtc: Document the Renesas RTCA-3 IP
rtc: renesas-rtca3: Add driver for RTCA-3 available on Renesas RZ/G3S
SoC
arm64: dts: renesas: r9a08g045: Add VBATTB node
arm64: dts: renesas: r9a08g045: Add RTC node
arm64: dts: renesas: rzg3s-smarc-som: Enable VBATTB clock
arm64: dts: renesas: rzg3s-smarc-som: Enable RTC
arm64: defconfig: Enable VBATTB
arm64: defconfig: Enable Renesas RTCA-3 flag
.../mfd/renesas,r9a08g045-vbattb.yaml | 136 +++
.../bindings/rtc/renesas,rz-rtca3.yaml | 69 ++
MAINTAINERS | 8 +
arch/arm64/boot/dts/renesas/r9a08g045.dtsi | 43 +
.../boot/dts/renesas/rzg3s-smarc-som.dtsi | 17 +
arch/arm64/configs/defconfig | 3 +
drivers/clk/renesas/Kconfig | 5 +
drivers/clk/renesas/Makefile | 1 +
drivers/clk/renesas/clk-vbattb.c | 212 +++++
drivers/mfd/Kconfig | 8 +
drivers/mfd/Makefile | 1 +
drivers/mfd/renesas-vbattb.c | 78 ++
drivers/rtc/Kconfig | 10 +
drivers/rtc/Makefile | 1 +
drivers/rtc/rtc-renesas-rtca3.c | 853 ++++++++++++++++++
15 files changed, 1445 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/renesas,r9a08g045-vbattb.yaml
create mode 100644 Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml
create mode 100644 drivers/clk/renesas/clk-vbattb.c
create mode 100644 drivers/mfd/renesas-vbattb.c
create mode 100644 drivers/rtc/rtc-renesas-rtca3.c
--
2.39.2
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