linux-kernel - [PATCH v7 0/6] Add support for DU/DSI clocks and DSI driver support for the Renesas RZ/V2H(P) SoC

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Message-ID: <20250728201435.3505594-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Mon, 28 Jul 2025 21:14:29 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Biju Das <biju.das.jz@...renesas.com>,
	Magnus Damm <magnus.damm@...il.com>
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v7 0/6] Add support for DU/DSI clocks and DSI driver support for the Renesas RZ/V2H(P) SoC

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Hi All,

This patch series adds DU/DSI clocks and provides support for the
MIPI DSI interface on the RZ/V2H(P) SoC. It was originally part of
series [0], but has now been split into 6 patches due to dependencies
on the clock driver, making it easier to review and merge.

[0] https://lore.kernel.org/all/20250430204112.342123-1-prabhakar.mahadev-lad.rj@bp.renesas.com/

v6->v7:
- Renamed pllclk to pllrefclk in DT binding
- Added a new patch to add instance field to struct pll
- Renamed rzv2h_pll_div_limits to rzv2h_pll_limits
- Included fout_min and fout_max in the rzv2h_pll_limits structure
- Renamed rzv2h_plldsi_parameters to rzv2h_pll_div_pars and re-structured
  for readability
- Dropped rzv2h_dsi_get_pll_parameters_values() instead added modular apis 
  to calculate the PLL parameters ie rzv2h_get_pll_pars/rzv2h_get_pll_div_pars/
  rzv2h_get_pll_dtable_pars
- Dropped plldsi_limits from rzv2h_cpg_info structure
- Updated the DSI driver to use the new PLL APIs
- Included the LPCLK patch
- Rebased the changes on next-20250728

v5-> v6:
- Renamed CPG_PLL_STBY_SSCGEN_WEN to CPG_PLL_STBY_SSC_EN_WEN
- Updated CPG_PLL_CLK1_DIV_K, CPG_PLL_CLK1_DIV_M, and
  CPG_PLL_CLK1_DIV_P macros to use GENMASK
- Updated req->rate in rzv2h_cpg_plldsi_div_determine_rate()
- Dropped the cast in rzv2h_cpg_plldsi_div_set_rate()
- Dropped rzv2h_cpg_plldsi_round_rate() and implemented
  rzv2h_cpg_plldsi_determine_rate() instead
- Made use of FIELD_PREP()
- Moved CPG_CSDIV1 macro in patch 2/4
- Dropped two_pow_s in rzv2h_dsi_get_pll_parameters_values()
- Used mul_u32_u32() while calculating output_m and output_k_range
- Used div_s64() instead of div64_s64() while calculating
  pll_k
- Used mul_u32_u32() while calculating fvco and fvco checks
- Rounded the final output using DIV_U64_ROUND_CLOSEST()
- Renamed CLK_DIV_PLLETH_LPCLK to CLK_CDIV4_PLLETH_LPCLK
- Renamed CLK_CSDIV_PLLETH_LPCLK to CLK_PLLETH_LPCLK_GEAR
- Renamed CLK_PLLDSI_SDIV2 to CLK_PLLDSI_GEAR
- Renamed plldsi_sdiv2 to plldsi_gear
- Preserved the sort order (by part number).
- Added reviewed tag from Geert.
- Made use of GENMASK() macro for PLLCLKSET0R_PLL_*,
  PHYTCLKSETR_* and PHYTHSSETR_* macros.
- Replaced 10000000UL with 10 * MEGA
- Renamed mode_freq_hz to mode_freq_khz in rzv2h_dsi_mode_calc
- Replaced `i -= 1;` with `i--;`
- Renamed RZV2H_MIPI_DPHY_FOUT_MIN_IN_MEGA to
  RZV2H_MIPI_DPHY_FOUT_MIN_IN_MHZ and
  RZV2H_MIPI_DPHY_FOUT_MAX_IN_MEGA to
  RZV2H_MIPI_DPHY_FOUT_MAX_IN_MHZ.
  
Cheers,
Prabhakar

Lad Prabhakar (6):
  clk: renesas: rzv2h-cpg: Add instance field to struct pll
  clk: renesas: rzv2h-cpg: Add support for DSI clocks
  clk: renesas: r9a09g057: Add clock and reset entries for DSI and LCDC
  dt-bindings: display: bridge: renesas,dsi: Document RZ/V2H(P) and
    RZ/V2N
  drm: renesas: rz-du: mipi_dsi: Add support for LPCLK clock handling
  drm: renesas: rz-du: mipi_dsi: Add support for RZ/V2H(P) SoC

 .../bindings/display/bridge/renesas,dsi.yaml  | 120 ++++--
 drivers/clk/renesas/r9a09g057-cpg.c           |  62 +++
 drivers/clk/renesas/rzv2h-cpg.c               | 309 +++++++++++++-
 drivers/clk/renesas/rzv2h-cpg.h               |  29 +-
 .../gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c    | 350 ++++++++++++++++
 .../drm/renesas/rz-du/rzg2l_mipi_dsi_regs.h   |  34 ++
 include/linux/clk/renesas-rzv2h-cpg-pll.h     | 395 ++++++++++++++++++
 7 files changed, 1257 insertions(+), 42 deletions(-)
 create mode 100644 include/linux/clk/renesas-rzv2h-cpg-pll.h

-- 
2.50.1