From: Geert Uytterhoeven <geert+renesas@glider.be> To: Simon Horman <horms@verge.net.au>, Magnus Damm <magnus.damm@gmail.com> Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Geert Uytterhoeven <geert+renesas@glider.be>, Andrew Lunn <andrew@lunn.ch>, Florian Fainelli <f.fainelli@gmail.com>, netdev@vger.kernel.org Subject: [PATCH v2 0/5] ARM: dts: rcar-gen2: Convert to new CPG/MSSR bindings Date: Fri, 18 Aug 2017 11:11:33 +0200 [thread overview] Message-ID: <1503047498-29078-1-git-send-email-geert+renesas@glider.be> (raw) Hi Simon, Magnus, Currently Renesas R-Car Gen2 SoCs use the common clk-rcar-gen2, clk-mstp, and clk-div6 drivers, which depend on most clocks being described in DT. Especially the module (MSTP) clocks are cumbersome and error prone, due to 3 arrays (clocks, clock-indices, and clock-output-names) to be kept in sync. In addition, the clk-mstp driver cannot be extended easily to also support module resets, which are provided by the same hardware module. Hence when developing support for R-Car Gen3 SoCs, another approach was chosen, which led to the CPG/MSSR driver core, and SoC-specific subdrivers (initially for R-Car Gen3, but later also for RZ/G1). This series converts the various R-Car Gen2 DTSes to migrate to the new CPG/MSSR drivers that were added in v4.13-rc1. Note that module reset descriptions will be added later. Changes compared to v1: - Rebased. Dependencies: - renesas-devel-20170818-v4.13-rc5. Known issues: - The CPG/MSSR driver is initialized later than the old clk-rcar-gen2 driver, causing changes of initialization order for other drivers. Currently the PHY subsystem does not support probe deferral +irq: no irq domain found for /interrupt-controller@e61c0000 ! -Micrel KSZ8041RNLI ee700000.ethernet-ffffffff:01: attached PHY driver [Micrel KSZ8041RNLI] (mii_bus:phy_addr=ee700000.ethernet-ffffffff:01, irq=182) +Micrel KSZ8041RNLI ee700000.ethernet-ffffffff:01: attached PHY driver [Micrel KSZ8041RNLI] (mii_bus:phy_addr=ee700000.ethernet-ffffffff:01, irq=-1) leading to the Ethernet PHY falling back to polling instead of using an interrupt. This can be remedied by "of_mdio: Fix broken PHY IRQ in case of probe deferral" (https://patchwork.kernel.org/patch/9734175/), which is still pending approval. Fortunately the impact of this is limited to a small delay in the detection of cable (un)plugging. Note that when using the PHY interrupt, cable unplugging is reported instantaneous, but plugging takes ca. 1.5-1.8 seconds. Hence when using polling with the standard interval of 1 second, the link comes up in about the same time. For your convenience, this series is also available in the topic/rcar2-cpg-mssr-dt-v2 branch of my renesas-drivers git repository at git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git. This has been tested on r8a7790/lager, r8a7791/koelsch, r8a7792/blanche, r8a7793/gose, and r8a7794/alt. /sys/kernel/debug/clk/clk_summary has been compared before and after the conversion. Thanks for applying! Geert Uytterhoeven (5): ARM: dts: r8a7790: Convert to new CPG/MSSR bindings ARM: dts: r8a7791: Convert to new CPG/MSSR bindings ARM: dts: r8a7792: Convert to new CPG/MSSR bindings ARM: dts: r8a7793: Convert to new CPG/MSSR bindings ARM: dts: r8a7794: Convert to new CPG/MSSR bindings arch/arm/boot/dts/r8a7790-lager.dts | 7 +- arch/arm/boot/dts/r8a7790.dtsi | 557 ++++++---------------------------- arch/arm/boot/dts/r8a7791-koelsch.dts | 4 +- arch/arm/boot/dts/r8a7791-porter.dts | 4 +- arch/arm/boot/dts/r8a7791.dtsi | 557 +++++++--------------------------- arch/arm/boot/dts/r8a7792-blanche.dts | 3 +- arch/arm/boot/dts/r8a7792-wheat.dts | 3 +- arch/arm/boot/dts/r8a7792.dtsi | 333 ++++---------------- arch/arm/boot/dts/r8a7793-gose.dts | 4 +- arch/arm/boot/dts/r8a7793.dtsi | 459 +++++----------------------- arch/arm/boot/dts/r8a7794-alt.dts | 3 +- arch/arm/boot/dts/r8a7794-silk.dts | 3 +- arch/arm/boot/dts/r8a7794.dtsi | 528 +++++--------------------------- 13 files changed, 430 insertions(+), 2035 deletions(-) -- 2.7.4 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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From: geert+renesas@glider.be (Geert Uytterhoeven) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/5] ARM: dts: rcar-gen2: Convert to new CPG/MSSR bindings Date: Fri, 18 Aug 2017 11:11:33 +0200 [thread overview] Message-ID: <1503047498-29078-1-git-send-email-geert+renesas@glider.be> (raw) Hi Simon, Magnus, Currently Renesas R-Car Gen2 SoCs use the common clk-rcar-gen2, clk-mstp, and clk-div6 drivers, which depend on most clocks being described in DT. Especially the module (MSTP) clocks are cumbersome and error prone, due to 3 arrays (clocks, clock-indices, and clock-output-names) to be kept in sync. In addition, the clk-mstp driver cannot be extended easily to also support module resets, which are provided by the same hardware module. Hence when developing support for R-Car Gen3 SoCs, another approach was chosen, which led to the CPG/MSSR driver core, and SoC-specific subdrivers (initially for R-Car Gen3, but later also for RZ/G1). This series converts the various R-Car Gen2 DTSes to migrate to the new CPG/MSSR drivers that were added in v4.13-rc1. Note that module reset descriptions will be added later. Changes compared to v1: - Rebased. Dependencies: - renesas-devel-20170818-v4.13-rc5. Known issues: - The CPG/MSSR driver is initialized later than the old clk-rcar-gen2 driver, causing changes of initialization order for other drivers. Currently the PHY subsystem does not support probe deferral +irq: no irq domain found for /interrupt-controller at e61c0000 ! -Micrel KSZ8041RNLI ee700000.ethernet-ffffffff:01: attached PHY driver [Micrel KSZ8041RNLI] (mii_bus:phy_addr=ee700000.ethernet-ffffffff:01, irq=182) +Micrel KSZ8041RNLI ee700000.ethernet-ffffffff:01: attached PHY driver [Micrel KSZ8041RNLI] (mii_bus:phy_addr=ee700000.ethernet-ffffffff:01, irq=-1) leading to the Ethernet PHY falling back to polling instead of using an interrupt. This can be remedied by "of_mdio: Fix broken PHY IRQ in case of probe deferral" (https://patchwork.kernel.org/patch/9734175/), which is still pending approval. Fortunately the impact of this is limited to a small delay in the detection of cable (un)plugging. Note that when using the PHY interrupt, cable unplugging is reported instantaneous, but plugging takes ca. 1.5-1.8 seconds. Hence when using polling with the standard interval of 1 second, the link comes up in about the same time. For your convenience, this series is also available in the topic/rcar2-cpg-mssr-dt-v2 branch of my renesas-drivers git repository at git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git. This has been tested on r8a7790/lager, r8a7791/koelsch, r8a7792/blanche, r8a7793/gose, and r8a7794/alt. /sys/kernel/debug/clk/clk_summary has been compared before and after the conversion. Thanks for applying! Geert Uytterhoeven (5): ARM: dts: r8a7790: Convert to new CPG/MSSR bindings ARM: dts: r8a7791: Convert to new CPG/MSSR bindings ARM: dts: r8a7792: Convert to new CPG/MSSR bindings ARM: dts: r8a7793: Convert to new CPG/MSSR bindings ARM: dts: r8a7794: Convert to new CPG/MSSR bindings arch/arm/boot/dts/r8a7790-lager.dts | 7 +- arch/arm/boot/dts/r8a7790.dtsi | 557 ++++++---------------------------- arch/arm/boot/dts/r8a7791-koelsch.dts | 4 +- arch/arm/boot/dts/r8a7791-porter.dts | 4 +- arch/arm/boot/dts/r8a7791.dtsi | 557 +++++++--------------------------- arch/arm/boot/dts/r8a7792-blanche.dts | 3 +- arch/arm/boot/dts/r8a7792-wheat.dts | 3 +- arch/arm/boot/dts/r8a7792.dtsi | 333 ++++---------------- arch/arm/boot/dts/r8a7793-gose.dts | 4 +- arch/arm/boot/dts/r8a7793.dtsi | 459 +++++----------------------- arch/arm/boot/dts/r8a7794-alt.dts | 3 +- arch/arm/boot/dts/r8a7794-silk.dts | 3 +- arch/arm/boot/dts/r8a7794.dtsi | 528 +++++--------------------------- 13 files changed, 430 insertions(+), 2035 deletions(-) -- 2.7.4 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
next reply other threads:[~2017-08-18 9:11 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-08-18 9:11 Geert Uytterhoeven [this message] 2017-08-18 9:11 ` [PATCH v2 0/5] ARM: dts: rcar-gen2: Convert to new CPG/MSSR bindings Geert Uytterhoeven 2017-08-18 9:11 ` [PATCH v2 1/5] ARM: dts: r8a7790: " Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-18 9:11 ` [PATCH v2 3/5] ARM: dts: r8a7792: " Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-18 9:11 ` [PATCH v2 4/5] ARM: dts: r8a7793: " Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven [not found] ` <1503047498-29078-1-git-send-email-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> 2017-08-18 9:11 ` [PATCH v2 2/5] ARM: dts: r8a7791: " Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-18 9:11 ` [PATCH v2 5/5] ARM: dts: r8a7794: " Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-18 9:11 ` Geert Uytterhoeven 2017-08-21 9:02 ` [PATCH v2 0/5] ARM: dts: rcar-gen2: " Simon Horman 2017-08-21 9:02 ` Simon Horman
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