linux-kernel - [PATCH v3 0/8] Add support for the rest of Renesas RZ/G3S serial interfaces

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Message-Id: <20241115134401.3893008-1-claudiu.beznea.uj@bp.renesas.com>
Date: Fri, 15 Nov 2024 15:43:53 +0200
From: Claudiu <claudiu.beznea@...on.dev>
To: geert+renesas@...der.be,
	magnus.damm@...il.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	mturquette@...libre.com,
	sboyd@...nel.org,
	gregkh@...uxfoundation.org,
	jirislaby@...nel.org,
	p.zabel@...gutronix.de,
	lethal@...ux-sh.org,
	g.liakhovetski@....de
Cc: linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-serial@...r.kernel.org,
	claudiu.beznea@...on.dev,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH v3 0/8] Add support for the rest of Renesas RZ/G3S serial interfaces

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Hi,

The Renesas RZ/G3S SoC has 6 serial interfaces. One of them is used
as debug console (and it is already enabled in the current code base).
Series adds support for the remaining ones.

Patches:
-    01/08 - adds clock, reset and power domain support for the serial
             interfaces
-    02/08 - serial driver fix patch identified while adding RZ/G3S
             support
-    03/08 - extends suspend to RAM support on the serial driver for
             the RZ/G3S SoC
- 04-08/08 - add device tree support

Merge strategy, if any:
- patch 01/08 can go through Renesas tree
- patches 02-03/08 can go through serial tree
- patches 04-08/08 can go through Renesas tree

Thank you,
Claudiu Beznea

Changes in v3:
- in patch "serial: sh-sci: Check if TX data was written to device in
  .tx_empty()":
-- check the status of the DMA transaction in tx_empty()
-- changed the variable name that tracks if TX occurred

Changes in v2:
- drop patch "serial: sh-sci: Clean sci_ports[0] after at earlycon exit"
  from v1 as it was already applied
- used bool instead of atomic_t in patch
  "serial: sh-sci: Check if TX data was written to device in .tx_empty()"

Claudiu Beznea (8):
  clk: renesas: r9a08g045: Add clock, reset and power domain for the
    remaining SCIFs
  serial: sh-sci: Check if TX data was written to device in .tx_empty()
  serial: sh-sci: Update the suspend/resume support
  arm64: dts: renesas: r9a08g045: Add the remaining SCIF interfaces
  arm64: dts: renesas: rzg3s-smarc: Fix the debug serial alias
  arm64: dts: renesas: rzg3s-smarc-switches: Add a header to describe
    different switches
  arm64: dts: renesas: rzg3s-smarc: Enable SCIF3
  arm64: dts: renesas: r9a08g045s33-smarc-pmod: Add overlay for SCIF1

 arch/arm64/boot/dts/renesas/Makefile          |  3 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    | 90 +++++++++++++++++++
 .../dts/renesas/r9a08g045s33-smarc-pmod.dtso  | 48 ++++++++++
 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     | 25 +-----
 .../boot/dts/renesas/rzg3s-smarc-switches.h   | 32 +++++++
 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi  | 25 +++++-
 drivers/clk/renesas/r9a08g045-cpg.c           | 20 +++++
 drivers/tty/serial/sh-sci.c                   | 79 ++++++++++++++--
 8 files changed, 288 insertions(+), 34 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33-smarc-pmod.dtso
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc-switches.h

-- 
2.39.2