From d0748065daec4d95d7d8fa908d4c7c0c72853731 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 23 Nov 2021 10:14:22 +0100 Subject: [PATCH] bcm53xx: use new USB 2.0 PHY binding MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This fixes: [ 10.440495] bcm_ns_usb2 1800c000.usb2-phy: can't request region for resource [mem 0x1800c000-0x1800cfff] [ 10.450039] bcm_ns_usb2 1800c000.usb2-phy: Failed to map DMU regs [ 10.456183] bcm_ns_usb2: probe of 1800c000.usb2-phy failed with error -16 caused by conflict in allocating resources. Fixes: 44ce70f0e209c ("bcm53xx: drop downstream patch that now breaks pinctrl driver") Signed-off-by: Rafał Miłecki (cherry picked from commit 1d7c1a41987ae463700224c08a3629e4086a8f39) --- ...support-updated-DT-binding-with-PHY-.patch | 131 ++++++++++++++++++ ...-use-non-deprecated-USB-2.0-PHY-bind.patch | 52 +++++++ 2 files changed, 183 insertions(+) create mode 100644 target/linux/bcm53xx/patches-5.4/070-v5.17-phy-bcm-ns-usb2-support-updated-DT-binding-with-PHY-.patch create mode 100644 target/linux/bcm53xx/patches-5.4/130-ARM-dts-BCM5301X-use-non-deprecated-USB-2.0-PHY-bind.patch diff --git a/target/linux/bcm53xx/patches-5.4/070-v5.17-phy-bcm-ns-usb2-support-updated-DT-binding-with-PHY-.patch b/target/linux/bcm53xx/patches-5.4/070-v5.17-phy-bcm-ns-usb2-support-updated-DT-binding-with-PHY-.patch new file mode 100644 index 0000000000..464849bc69 --- /dev/null +++ b/target/linux/bcm53xx/patches-5.4/070-v5.17-phy-bcm-ns-usb2-support-updated-DT-binding-with-PHY-.patch @@ -0,0 +1,131 @@ +From d3bc6269e21fc474763708e79c7a118740befb94 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 26 Oct 2021 11:37:16 +0200 +Subject: [PATCH] phy: bcm-ns-usb2: support updated DT binding with PHY reg + space +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Updated DT binding maps just a PHY's register space instead of the whole +DMU block. Accessing a common CRU reg is handled using syscon & +regmap. + +The old binding has been deprecated and remains supported as a fallback +method. + +Signed-off-by: Rafał Miłecki +Link: https://lore.kernel.org/r/20211026093716.5567-1-zajec5@gmail.com +Signed-off-by: Vinod Koul +--- + drivers/phy/broadcom/phy-bcm-ns-usb2.c | 52 +++++++++++++++++++++----- + 1 file changed, 43 insertions(+), 9 deletions(-) + +--- a/drivers/phy/broadcom/phy-bcm-ns-usb2.c ++++ b/drivers/phy/broadcom/phy-bcm-ns-usb2.c +@@ -9,17 +9,23 @@ + #include + #include + #include ++#include + #include + #include + #include + #include + #include ++#include + #include + + struct bcm_ns_usb2 { + struct device *dev; + struct clk *ref_clk; + struct phy *phy; ++ struct regmap *clkset; ++ void __iomem *base; ++ ++ /* Deprecated binding */ + void __iomem *dmu; + }; + +@@ -27,7 +33,6 @@ static int bcm_ns_usb2_phy_init(struct p + { + struct bcm_ns_usb2 *usb2 = phy_get_drvdata(phy); + struct device *dev = usb2->dev; +- void __iomem *dmu = usb2->dmu; + u32 ref_clk_rate, usb2ctl, usb_pll_ndiv, usb_pll_pdiv; + int err = 0; + +@@ -44,7 +49,10 @@ static int bcm_ns_usb2_phy_init(struct p + goto err_clk_off; + } + +- usb2ctl = readl(dmu + BCMA_DMU_CRU_USB2_CONTROL); ++ if (usb2->base) ++ usb2ctl = readl(usb2->base); ++ else ++ usb2ctl = readl(usb2->dmu + BCMA_DMU_CRU_USB2_CONTROL); + + if (usb2ctl & BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_PDIV_MASK) { + usb_pll_pdiv = usb2ctl; +@@ -58,15 +66,24 @@ static int bcm_ns_usb2_phy_init(struct p + usb_pll_ndiv = (1920000000 * usb_pll_pdiv) / ref_clk_rate; + + /* Unlock DMU PLL settings with some magic value */ +- writel(0x0000ea68, dmu + BCMA_DMU_CRU_CLKSET_KEY); ++ if (usb2->clkset) ++ regmap_write(usb2->clkset, 0, 0x0000ea68); ++ else ++ writel(0x0000ea68, usb2->dmu + BCMA_DMU_CRU_CLKSET_KEY); + + /* Write USB 2.0 PLL control setting */ + usb2ctl &= ~BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_MASK; + usb2ctl |= usb_pll_ndiv << BCMA_DMU_CRU_USB2_CONTROL_USB_PLL_NDIV_SHIFT; +- writel(usb2ctl, dmu + BCMA_DMU_CRU_USB2_CONTROL); ++ if (usb2->base) ++ writel(usb2ctl, usb2->base); ++ else ++ writel(usb2ctl, usb2->dmu + BCMA_DMU_CRU_USB2_CONTROL); + + /* Lock DMU PLL settings */ +- writel(0x00000000, dmu + BCMA_DMU_CRU_CLKSET_KEY); ++ if (usb2->clkset) ++ regmap_write(usb2->clkset, 0, 0x00000000); ++ else ++ writel(0x00000000, usb2->dmu + BCMA_DMU_CRU_CLKSET_KEY); + + err_clk_off: + clk_disable_unprepare(usb2->ref_clk); +@@ -91,11 +108,28 @@ static int bcm_ns_usb2_probe(struct plat + return -ENOMEM; + usb2->dev = dev; + +- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmu"); +- usb2->dmu = devm_ioremap_resource(dev, res); +- if (IS_ERR(usb2->dmu)) { +- dev_err(dev, "Failed to map DMU regs\n"); +- return PTR_ERR(usb2->dmu); ++ if (of_find_property(dev->of_node, "brcm,syscon-clkset", NULL)) { ++ usb2->base = devm_platform_ioremap_resource(pdev, 0); ++ if (IS_ERR(usb2->base)) { ++ dev_err(dev, "Failed to map control reg\n"); ++ return PTR_ERR(usb2->base); ++ } ++ ++ usb2->clkset = syscon_regmap_lookup_by_phandle(dev->of_node, ++ "brcm,syscon-clkset"); ++ if (IS_ERR(usb2->clkset)) { ++ dev_err(dev, "Failed to lookup clkset regmap\n"); ++ return PTR_ERR(usb2->clkset); ++ } ++ } else { ++ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmu"); ++ usb2->dmu = devm_ioremap_resource(dev, res); ++ if (IS_ERR(usb2->dmu)) { ++ dev_err(dev, "Failed to map DMU regs\n"); ++ return PTR_ERR(usb2->dmu); ++ } ++ ++ dev_warn(dev, "using deprecated DT binding\n"); + } + + usb2->ref_clk = devm_clk_get(dev, "phy-ref-clk"); diff --git a/target/linux/bcm53xx/patches-5.4/130-ARM-dts-BCM5301X-use-non-deprecated-USB-2.0-PHY-bind.patch b/target/linux/bcm53xx/patches-5.4/130-ARM-dts-BCM5301X-use-non-deprecated-USB-2.0-PHY-bind.patch new file mode 100644 index 0000000000..e50bcd9f25 --- /dev/null +++ b/target/linux/bcm53xx/patches-5.4/130-ARM-dts-BCM5301X-use-non-deprecated-USB-2.0-PHY-bind.patch @@ -0,0 +1,52 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 23 Nov 2021 09:55:06 +0100 +Subject: [PATCH] ARM: dts: BCM5301X: use non-deprecated USB 2.0 PHY binding +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The new binding covers a single reg and uses syscon to reference shared +register. + +References: 55b9b741712d ("dt-bindings: phy: brcm,ns-usb2-phy: bind just a PHY block") +Signed-off-by: Rafał Miłecki +--- + arch/arm/boot/dts/bcm5301x.dtsi | 20 ++++++++++---------- + 1 file changed, 10 insertions(+), 10 deletions(-) + +--- a/arch/arm/boot/dts/bcm5301x.dtsi ++++ b/arch/arm/boot/dts/bcm5301x.dtsi +@@ -148,15 +148,6 @@ + }; + }; + +- usb2_phy: usb2-phy@1800c000 { +- compatible = "brcm,ns-usb2-phy"; +- reg = <0x1800c000 0x1000>; +- reg-names = "dmu"; +- #phy-cells = <0>; +- clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>; +- clock-names = "phy-ref-clk"; +- }; +- + axi@18000000 { + compatible = "brcm,bus-axi"; + reg = <0x18000000 0x1000>; +@@ -450,7 +441,16 @@ + "sata1", "sata2"; + }; + +- syscon@180 { ++ usb2_phy: phy@164 { ++ compatible = "brcm,ns-usb2-phy"; ++ reg = <0x164 0x4>; ++ brcm,syscon-clkset = <&cru_clkset>; ++ clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>; ++ clock-names = "phy-ref-clk"; ++ #phy-cells = <0>; ++ }; ++ ++ cru_clkset: syscon@180 { + compatible = "brcm,cru-clkset", "syscon"; + reg = <0x180 0x4>; + }; -- 2.30.2