From: Geert Uytterhoeven <geert+renesas@glider.be> To: Wolfram Sang <wsa+renesas@sang-engineering.com>, Sergey Shtylyov <s.shtylyov@omp.ru> Cc: linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Geert Uytterhoeven <geert+renesas@glider.be> Subject: [PATCH 0/2] arm64: dts: renesas: rcar-gen4: Correct avb[01] reg sizes Date: Sun, 11 Feb 2024 15:21:29 +0100 [thread overview] Message-ID: <cover.1707660323.git.geert+renesas@glider.be> (raw) Hi all, All Ethernet AVB instances on R-Car Gen4 SoCs have registers related to UDP/IP support, starting at offset 0x800. However, the register blocks for some (but not all) instances are too small to cover them. This patch series fixes this by extending the register block sizes where needed. Note that this has no immediate impact on actual operation, as the Linux driver does not use the UDP/IP registers. Besides, ioremap() granulatity is PAGE_SIZE, so the registers are accessible anyway. I also considered introducing a new reg tuplet to cover the UDP/IP registers. However, that would complicate handling as some instances (on some R-Car Gen2/3 SoCs) already have two reg tuplets, and there are no reg-names defined: reg: items: - description: MAC register block - description: Stream buffer So I think just enlarging the first register block would be fine. To be queued in renesas-devel for v6.9, if you agree. Thanks for your comments! Geert Uytterhoeven (2): arm64: dts: renesas: r8a779a0: Correct avb[01] reg sizes arm64: dts: renesas: r8a779g0: Correct avb[01] reg sizes arch/arm64/boot/dts/renesas/r8a779a0.dtsi | 4 ++-- arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) -- 2.34.1 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
WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert+renesas@glider.be> To: Wolfram Sang <wsa+renesas@sang-engineering.com>, Sergey Shtylyov <s.shtylyov@omp.ru> Cc: linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Geert Uytterhoeven <geert+renesas@glider.be> Subject: [PATCH 0/2] arm64: dts: renesas: rcar-gen4: Correct avb[01] reg sizes Date: Sun, 11 Feb 2024 15:21:29 +0100 [thread overview] Message-ID: <cover.1707660323.git.geert+renesas@glider.be> (raw) Hi all, All Ethernet AVB instances on R-Car Gen4 SoCs have registers related to UDP/IP support, starting at offset 0x800. However, the register blocks for some (but not all) instances are too small to cover them. This patch series fixes this by extending the register block sizes where needed. Note that this has no immediate impact on actual operation, as the Linux driver does not use the UDP/IP registers. Besides, ioremap() granulatity is PAGE_SIZE, so the registers are accessible anyway. I also considered introducing a new reg tuplet to cover the UDP/IP registers. However, that would complicate handling as some instances (on some R-Car Gen2/3 SoCs) already have two reg tuplets, and there are no reg-names defined: reg: items: - description: MAC register block - description: Stream buffer So I think just enlarging the first register block would be fine. To be queued in renesas-devel for v6.9, if you agree. Thanks for your comments! Geert Uytterhoeven (2): arm64: dts: renesas: r8a779a0: Correct avb[01] reg sizes arm64: dts: renesas: r8a779g0: Correct avb[01] reg sizes arch/arm64/boot/dts/renesas/r8a779a0.dtsi | 4 ++-- arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) -- 2.34.1 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2024-02-11 14:21 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-11 14:21 Geert Uytterhoeven [this message] 2024-02-11 14:21 ` [PATCH 0/2] arm64: dts: renesas: rcar-gen4: Correct avb[01] reg sizes Geert Uytterhoeven 2024-02-11 14:21 ` [PATCH 1/2] arm64: dts: renesas: r8a779a0: " Geert Uytterhoeven 2024-02-11 14:21 ` Geert Uytterhoeven 2024-02-11 14:21 ` [PATCH 2/2] arm64: dts: renesas: r8a779g0: " Geert Uytterhoeven 2024-02-11 14:21 ` Geert Uytterhoeven 2024-02-11 17:01 ` [PATCH 0/2] arm64: dts: renesas: rcar-gen4: " Sergey Shtylyov 2024-02-11 17:01 ` Sergey Shtylyov 2024-02-11 18:17 ` Geert Uytterhoeven 2024-02-11 18:17 ` Geert Uytterhoeven
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