From 05b3adc0dbfd888f2a91c675146db5b62cdce0dc Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Fri, 1 Nov 2024 03:37:51 +0000 Subject: [PATCH] mediatek: mt7988: fix peripheral SPI busses The clocks for SPI busses were named wrongly which resulted in the spi-mt65xx driver not requesting them. This has apparently been worked around by marking the clocks required for SPI0 which is used for SPI-NOR and SPI-NAND flash chips as critical. Fix the device tree for all 3 generic SPI host controllers and no longer mark clocks as critical. Signed-off-by: Daniel Golle (cherry picked from commit 2b173ab730897f53539cab39e87e2b4638cb482a) --- .../arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 8 +-- ...nfracfg-SPI0-clocks-are-not-critical.patch | 65 +++++++++++++++++++ 2 files changed, 69 insertions(+), 4 deletions(-) create mode 100644 target/linux/mediatek/patches-6.6/255-clk-mediatek-mt7988-infracfg-SPI0-clocks-are-not-critical.patch diff --git a/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a.dtsi index c894253fed..39f8fd2ab1 100644 --- a/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a.dtsi +++ b/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a.dtsi @@ -806,7 +806,7 @@ <&infracfg CLK_INFRA_104M_SPI0>, <&infracfg CLK_INFRA_66M_SPI0_HCK>; clock-names = "parent-clk", "sel-clk", "spi-clk", - "spi-hclk"; + "hclk"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; @@ -817,11 +817,11 @@ reg = <0 0x11008000 0 0x100>; interrupts = ; clocks = <&topckgen CLK_TOP_MPLL_D2>, - <&topckgen CLK_TOP_SPI_SEL>, + <&topckgen CLK_TOP_SPIM_MST_SEL>, <&infracfg CLK_INFRA_104M_SPI1>, <&infracfg CLK_INFRA_66M_SPI1_HCK>; clock-names = "parent-clk", "sel-clk", "spi-clk", - "spi-hclk"; + "hclk"; #address-cells = <1>; #size-cells = <0>; pinctrl-names = "default"; @@ -838,7 +838,7 @@ <&infracfg CLK_INFRA_104M_SPI2_BCK>, <&infracfg CLK_INFRA_66M_SPI2_HCK>; clock-names = "parent-clk", "sel-clk", "spi-clk", - "spi-hclk"; + "hclk"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; diff --git a/target/linux/mediatek/patches-6.6/255-clk-mediatek-mt7988-infracfg-SPI0-clocks-are-not-critical.patch b/target/linux/mediatek/patches-6.6/255-clk-mediatek-mt7988-infracfg-SPI0-clocks-are-not-critical.patch new file mode 100644 index 0000000000..ed3471933c --- /dev/null +++ b/target/linux/mediatek/patches-6.6/255-clk-mediatek-mt7988-infracfg-SPI0-clocks-are-not-critical.patch @@ -0,0 +1,65 @@ +From patchwork Fri Nov 1 03:19:39 2024 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Daniel Golle +X-Patchwork-Id: 13858671 +Return-Path: + +Date: Fri, 1 Nov 2024 03:19:39 +0000 +From: Daniel Golle +To: linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, + linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, Uwe + =?iso-8859-1?q?Kleine-K=F6nig?= , + Sam Shih , Frank Wunderlich , + Daniel Golle , + AngeloGioacchino Del Regno , + Matthias Brugger , Stephen Boyd , + Michael Turquette +Subject: [PATCH] clk: mediatek: mt7988-infracfg: SPI0 clocks are not critical +Message-ID: +MIME-Version: 1.0 +Content-Disposition: inline +X-BeenThere: linux-mediatek@lists.infradead.org +X-Mailman-Version: 2.1.34 +Precedence: list +List-Id: +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +Sender: "Linux-mediatek" +Errors-To: + linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org + +SPI0 clocks have wrongly been marked as critical while, probably due +to the SPI driver not requesting them. This can (and should) be addressed +in device tree instead. +Remove CLK_IS_CRITICAL flag from clocks related to SPI0. + +Fixes: 4b4719437d85 ("clk: mediatek: add drivers for MT7988 SoC") +Signed-off-by: Daniel Golle +--- + drivers/clk/mediatek/clk-mt7988-infracfg.c | 6 ++---- + 1 file changed, 2 insertions(+), 4 deletions(-) + +--- a/drivers/clk/mediatek/clk-mt7988-infracfg.c ++++ b/drivers/clk/mediatek/clk-mt7988-infracfg.c +@@ -196,12 +196,10 @@ static const struct mtk_gate infra_clks[ + GATE_INFRA2(CLK_INFRA_SPINFI, "infra_f_fspinfi", "spinfi_sel", 10), + GATE_INFRA2_FLAGS(CLK_INFRA_66M_NFI_HCK, "infra_hf_66m_nfi_hck", "sysaxi_sel", 11, + CLK_IS_CRITICAL), +- GATE_INFRA2_FLAGS(CLK_INFRA_104M_SPI0, "infra_hf_104m_spi0", "infra_mux_spi0_sel", 12, +- CLK_IS_CRITICAL), ++ GATE_INFRA2(CLK_INFRA_104M_SPI0, "infra_hf_104m_spi0", "infra_mux_spi0_sel", 12), + GATE_INFRA2(CLK_INFRA_104M_SPI1, "infra_hf_104m_spi1", "infra_mux_spi1_sel", 13), + GATE_INFRA2(CLK_INFRA_104M_SPI2_BCK, "infra_hf_104m_spi2_bck", "infra_mux_spi2_sel", 14), +- GATE_INFRA2_FLAGS(CLK_INFRA_66M_SPI0_HCK, "infra_hf_66m_spi0_hck", "sysaxi_sel", 15, +- CLK_IS_CRITICAL), ++ GATE_INFRA2(CLK_INFRA_66M_SPI0_HCK, "infra_hf_66m_spi0_hck", "sysaxi_sel", 15), + GATE_INFRA2(CLK_INFRA_66M_SPI1_HCK, "infra_hf_66m_spi1_hck", "sysaxi_sel", 16), + GATE_INFRA2(CLK_INFRA_66M_SPI2_HCK, "infra_hf_66m_spi2_hck", "sysaxi_sel", 17), + GATE_INFRA2(CLK_INFRA_66M_FLASHIF_AXI, "infra_hf_66m_flashif_axi", "sysaxi_sel", 18), -- 2.30.2