From: Alper Nebi Yasak <alpernebiyasak@gmail.com> To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, "Conor Dooley" <conor+dt@kernel.org>, devicetree@vger.kernel.org, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>, "Stephen Boyd" <sboyd@kernel.org>, "Michael Turquette" <mturquette@baylibre.com>, "Rob Herring" <robh+dt@kernel.org>, linux-mediatek@lists.infradead.org, "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>, "Matthias Brugger" <matthias.bgg@gmail.com>, "Chen-Yu Tsai" <wenst@chromium.org>, linux-clk@vger.kernel.org, "AngeloGioacchino Del Regno" <angelogioacchino.delregno@collabora.com>, "Alper Nebi Yasak" <alpernebiyasak@gmail.com> Subject: [PATCH v2 2/2] arm64: dts: mediatek: mt8173: Fix timer 13 MHz clock description Date: Wed, 15 Nov 2023 20:06:25 +0300 [thread overview] Message-ID: <20231115170825.908640-2-alpernebiyasak@gmail.com> (raw) In-Reply-To: <20231115170825.908640-1-alpernebiyasak@gmail.com> A previous patch fixes an issue with the mt8173-infracfg clock driver when working as a module, but has the side effect of skipping set up of CLK_INFRA_CLK_13M in that case. This clock is used by the timer device. Similar to the MT8183, MT8192, MT8195 and MT8186 cases [1], change the input clock of the timer block a fixed factor divide-by-2 clock that takes the 26 MHz oscillator as its input. Also remove the RTC clock from the timer node while we're here. According to commit 59311b19d7f63 ("clocksource/drivers/timer-mediatek: Add system timer bindings") it is no longer used. [1] https://lore.kernel.org/all/20221201084229.3464449-1-wenst@chromium.org/ Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> --- Tested on a MT8173 Chromebook. But I'm not sure I understand all of this, so review with a pinch of salt. Do we need to remove CLK_INFRA_CLK_13M from mt8173-infracfg after this? Changes in v2: - Add this patch arch/arm64/boot/dts/mediatek/mt8173.dtsi | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi index c47d7d900f28..9062ca124d69 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi @@ -244,6 +244,15 @@ psci { cpu_on = <0x84000003>; }; + clk13m: fixed-factor-clock-13m { + compatible = "fixed-factor-clock"; + #clock-cells = <0>; + clocks = <&clk26m>; + clock-div = <2>; + clock-mult = <1>; + clock-output-names = "clk13m"; + }; + clk26m: oscillator0 { compatible = "fixed-clock"; #clock-cells = <0>; @@ -530,8 +539,7 @@ timer: timer@10008000 { "mediatek,mt6577-timer"; reg = <0 0x10008000 0 0x1000>; interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_LOW>; - clocks = <&infracfg CLK_INFRA_CLK_13M>, - <&topckgen CLK_TOP_RTC_SEL>; + clocks = <&clk13m>; }; pwrap: pwrap@1000d000 { -- 2.42.0
WARNING: multiple messages have this Message-ID (diff)
From: Alper Nebi Yasak <alpernebiyasak@gmail.com> To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, "Conor Dooley" <conor+dt@kernel.org>, devicetree@vger.kernel.org, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>, "Stephen Boyd" <sboyd@kernel.org>, "Michael Turquette" <mturquette@baylibre.com>, "Rob Herring" <robh+dt@kernel.org>, linux-mediatek@lists.infradead.org, "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>, "Matthias Brugger" <matthias.bgg@gmail.com>, "Chen-Yu Tsai" <wenst@chromium.org>, linux-clk@vger.kernel.org, "AngeloGioacchino Del Regno" <angelogioacchino.delregno@collabora.com>, "Alper Nebi Yasak" <alpernebiyasak@gmail.com> Subject: [PATCH v2 2/2] arm64: dts: mediatek: mt8173: Fix timer 13 MHz clock description Date: Wed, 15 Nov 2023 20:06:25 +0300 [thread overview] Message-ID: <20231115170825.908640-2-alpernebiyasak@gmail.com> (raw) In-Reply-To: <20231115170825.908640-1-alpernebiyasak@gmail.com> A previous patch fixes an issue with the mt8173-infracfg clock driver when working as a module, but has the side effect of skipping set up of CLK_INFRA_CLK_13M in that case. This clock is used by the timer device. Similar to the MT8183, MT8192, MT8195 and MT8186 cases [1], change the input clock of the timer block a fixed factor divide-by-2 clock that takes the 26 MHz oscillator as its input. Also remove the RTC clock from the timer node while we're here. According to commit 59311b19d7f63 ("clocksource/drivers/timer-mediatek: Add system timer bindings") it is no longer used. [1] https://lore.kernel.org/all/20221201084229.3464449-1-wenst@chromium.org/ Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> --- Tested on a MT8173 Chromebook. But I'm not sure I understand all of this, so review with a pinch of salt. Do we need to remove CLK_INFRA_CLK_13M from mt8173-infracfg after this? Changes in v2: - Add this patch arch/arm64/boot/dts/mediatek/mt8173.dtsi | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi index c47d7d900f28..9062ca124d69 100644 --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi @@ -244,6 +244,15 @@ psci { cpu_on = <0x84000003>; }; + clk13m: fixed-factor-clock-13m { + compatible = "fixed-factor-clock"; + #clock-cells = <0>; + clocks = <&clk26m>; + clock-div = <2>; + clock-mult = <1>; + clock-output-names = "clk13m"; + }; + clk26m: oscillator0 { compatible = "fixed-clock"; #clock-cells = <0>; @@ -530,8 +539,7 @@ timer: timer@10008000 { "mediatek,mt6577-timer"; reg = <0 0x10008000 0 0x1000>; interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_LOW>; - clocks = <&infracfg CLK_INFRA_CLK_13M>, - <&topckgen CLK_TOP_RTC_SEL>; + clocks = <&clk13m>; }; pwrap: pwrap@1000d000 { -- 2.42.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-11-15 17:08 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-15 17:06 [PATCH v2 1/2] clk: mediatek: mt8173-infracfg: Handle unallocated infracfg when module Alper Nebi Yasak 2023-11-15 17:06 ` Alper Nebi Yasak 2023-11-15 17:06 ` Alper Nebi Yasak [this message] 2023-11-15 17:06 ` [PATCH v2 2/2] arm64: dts: mediatek: mt8173: Fix timer 13 MHz clock description Alper Nebi Yasak
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