From f0b1dabd8b9f03fdf6d27dd2eaf4f175d6a15b07 Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Mon, 11 Aug 2014 14:43:46 +0200 Subject: fix wifi on cubox-i with patches from rmk --- target/arm/cubox-i/patches/3.16/rmk-wifi.patch | 569 +++++++++++++++++++++++++ 1 file changed, 569 insertions(+) create mode 100644 target/arm/cubox-i/patches/3.16/rmk-wifi.patch (limited to 'target/arm') diff --git a/target/arm/cubox-i/patches/3.16/rmk-wifi.patch b/target/arm/cubox-i/patches/3.16/rmk-wifi.patch new file mode 100644 index 000000000..0ba3a7951 --- /dev/null +++ b/target/arm/cubox-i/patches/3.16/rmk-wifi.patch @@ -0,0 +1,569 @@ +diff -Nur linux-3.16.orig/arch/arm/boot/dts/imx6qdl-microsom.dtsi linux-3.16/arch/arm/boot/dts/imx6qdl-microsom.dtsi +--- linux-3.16.orig/arch/arm/boot/dts/imx6qdl-microsom.dtsi 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/arch/arm/boot/dts/imx6qdl-microsom.dtsi 2014-08-11 12:34:43.603892919 +0200 +@@ -2,14 +2,92 @@ + * Copyright (C) 2013,2014 Russell King + */ + ++#include ++/ { ++ regulators { ++ compatible = "simple-bus"; ++ ++ reg_brcm_osc: brcm-osc-reg { ++ compatible = "regulator-fixed"; ++ enable-active-high; ++ gpio = <&gpio5 5 0>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&pinctrl_microsom_brcm_osc_reg>; ++ regulator-name = "brcm_osc_reg"; ++ regulator-min-microvolt = <3300000>; ++ regulator-max-microvolt = <3300000>; ++ regulator-always-on; ++ regulator-boot-on; ++ }; ++ ++ reg_brcm: brcm-reg { ++ compatible = "regulator-fixed"; ++ enable-active-high; ++ gpio = <&gpio3 19 0>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&pinctrl_microsom_brcm_reg>; ++ regulator-name = "brcm_reg"; ++ regulator-min-microvolt = <3300000>; ++ regulator-max-microvolt = <3300000>; ++ startup-delay-us = <200000>; ++ }; ++ }; ++}; ++ + &iomuxc { + microsom { ++ pinctrl_microsom_brcm_bt: microsom-brcm-bt { ++ fsl,pins = < ++ MX6QDL_PAD_CSI0_DAT14__GPIO6_IO00 0x40013070 ++ MX6QDL_PAD_CSI0_DAT15__GPIO6_IO01 0x40013070 ++ MX6QDL_PAD_CSI0_DAT18__GPIO6_IO04 0x40013070 ++ >; ++ }; ++ ++ pinctrl_microsom_brcm_osc_reg: microsom-brcm-osc-reg { ++ fsl,pins = < ++ MX6QDL_PAD_DISP0_DAT11__GPIO5_IO05 0x40013070 ++ >; ++ }; ++ ++ pinctrl_microsom_brcm_reg: microsom-brcm-reg { ++ fsl,pins = < ++ MX6QDL_PAD_EIM_D19__GPIO3_IO19 0x40013070 ++ >; ++ }; ++ ++ pinctrl_microsom_brcm_wifi: microsom-brcm-wifi { ++ fsl,pins = < ++ MX6QDL_PAD_GPIO_8__XTALOSC_REF_CLK_32K 0x1b0b0 ++ MX6QDL_PAD_CSI0_DATA_EN__GPIO5_IO20 0x40013070 ++ MX6QDL_PAD_CSI0_DAT8__GPIO5_IO26 0x40013070 ++ MX6QDL_PAD_CSI0_DAT9__GPIO5_IO27 0x40013070 ++ >; ++ }; + pinctrl_microsom_uart1: microsom-uart1 { + fsl,pins = < + MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA 0x1b0b1 + MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA 0x1b0b1 + >; + }; ++ pinctrl_microsom_uart4_1: microsom-uart4 { ++ fsl,pins = < ++ MX6QDL_PAD_CSI0_DAT12__UART4_TX_DATA 0x1b0b1 ++ MX6QDL_PAD_CSI0_DAT13__UART4_RX_DATA 0x1b0b1 ++ MX6QDL_PAD_CSI0_DAT16__UART4_RTS_B 0x1b0b1 ++ MX6QDL_PAD_CSI0_DAT17__UART4_CTS_B 0x1b0b1 ++ >; ++ }; ++ pinctrl_microsom_usdhc1: microsom-usdhc1 { ++ fsl,pins = < ++ MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17059 ++ MX6QDL_PAD_SD1_CLK__SD1_CLK 0x10059 ++ MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059 ++ MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059 ++ MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059 ++ MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059 ++ >; ++ }; + }; + }; + +@@ -18,3 +96,23 @@ + pinctrl-0 = <&pinctrl_microsom_uart1>; + status = "okay"; + }; ++ ++/* UART4 - Connected to optional BRCM Wifi/BT/FM */ ++&uart4 { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&pinctrl_microsom_brcm_bt &pinctrl_microsom_uart4_1>; ++ fsl,uart-has-rtscts; ++ status = "okay"; ++}; ++ ++/* USDHC1 - Connected to optional BRCM Wifi/BT/FM */ ++&usdhc1 { ++ card-external-vcc-supply = <®_brcm>; ++ card-reset-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>, <&gpio6 0 GPIO_ACTIVE_LOW>; ++ keep-power-in-suspend; ++ non-removable; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&pinctrl_microsom_brcm_wifi &pinctrl_microsom_usdhc1>; ++ vmmc-supply = <®_brcm>; ++ status = "okay"; ++}; +diff -Nur linux-3.16.orig/Documentation/devicetree/bindings/mmc/mmc.txt linux-3.16/Documentation/devicetree/bindings/mmc/mmc.txt +--- linux-3.16.orig/Documentation/devicetree/bindings/mmc/mmc.txt 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/Documentation/devicetree/bindings/mmc/mmc.txt 2014-08-11 12:34:15.535644516 +0200 +@@ -5,6 +5,8 @@ + Interpreted by the OF core: + - reg: Registers location and length. + - interrupts: Interrupts used by the MMC controller. ++- clocks: Clocks needed for the host controller, if any. ++- clock-names: Goes with clocks above. + + Card detection: + If no property below is supplied, host native card detect is used. +@@ -41,6 +43,15 @@ + - mmc-hs400-1_8v: eMMC HS400 mode(1.8V I/O) is supported + - mmc-hs400-1_2v: eMMC HS400 mode(1.2V I/O) is supported + ++Card power and reset control: ++The following properties can be specified for cases where the MMC ++peripheral needs additional reset, regulator and clock lines. It is for ++example common for WiFi/BT adapters to have these separate from the main ++MMC bus: ++ - card-reset-gpios: Specify GPIOs for card reset (reset active low) ++ - card-external-vcc-supply: Regulator to drive (independent) card VCC ++ - clock with name "card_ext_clock": External clock provided to the card ++ + *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line + polarity properties, we have to fix the meaning of the "normal" and "inverted" + line levels. We choose to follow the SDHCI standard, which specifies both those +diff -Nur linux-3.16.orig/drivers/mmc/core/core.c linux-3.16/drivers/mmc/core/core.c +--- linux-3.16.orig/drivers/mmc/core/core.c 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/drivers/mmc/core/core.c 2014-08-11 12:34:15.555644693 +0200 +@@ -13,11 +13,13 @@ + #include + #include + #include ++#include + #include + #include + #include + #include + #include ++#include + #include + #include + #include +@@ -1515,6 +1517,43 @@ + mmc_host_clk_release(host); + } + ++static void mmc_card_power_up(struct mmc_host *host) ++{ ++ int i; ++ struct gpio_desc **gds = host->card_reset_gpios; ++ ++ for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) { ++ if (gds[i]) { ++ dev_dbg(host->parent, "Asserting reset line %d", i); ++ gpiod_set_value(gds[i], 1); ++ } ++ } ++ ++ if (host->card_regulator) { ++ dev_dbg(host->parent, "Enabling external regulator"); ++ if (regulator_enable(host->card_regulator)) ++ dev_err(host->parent, "Failed to enable external regulator"); ++ } ++ ++ if (host->card_clk) { ++ dev_dbg(host->parent, "Enabling external clock"); ++ clk_prepare_enable(host->card_clk); ++ } ++ ++ /* 2ms delay to let clocks and power settle */ ++ mmc_delay(20); ++ ++ for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) { ++ if (gds[i]) { ++ dev_dbg(host->parent, "Deasserting reset line %d", i); ++ gpiod_set_value(gds[i], 0); ++ } ++ } ++ ++ /* 2ms delay to after reset release */ ++ mmc_delay(20); ++} ++ + /* + * Apply power to the MMC stack. This is a two-stage process. + * First, we enable power to the card without the clock running. +@@ -1531,6 +1570,9 @@ + if (host->ios.power_mode == MMC_POWER_ON) + return; + ++ /* Power up the card/module first, if needed */ ++ mmc_card_power_up(host); ++ + mmc_host_clk_hold(host); + + host->ios.vdd = fls(ocr) - 1; +diff -Nur linux-3.16.orig/drivers/mmc/core/host.c linux-3.16/drivers/mmc/core/host.c +--- linux-3.16.orig/drivers/mmc/core/host.c 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/drivers/mmc/core/host.c 2014-08-11 12:34:27.995754826 +0200 +@@ -12,14 +12,18 @@ + * MMC host class device management + */ + ++#include ++#include + #include + #include ++#include + #include + #include + #include + #include + #include + #include ++#include + #include + #include + +@@ -461,6 +465,66 @@ + + EXPORT_SYMBOL(mmc_of_parse); + ++static int mmc_of_parse_child(struct mmc_host *host) ++{ ++ struct device_node *np; ++ struct clk *clk; ++ int i; ++ ++ if (!host->parent || !host->parent->of_node) ++ return 0; ++ ++ np = host->parent->of_node; ++ ++ host->card_regulator = regulator_get(host->parent, "card-external-vcc"); ++ if (IS_ERR(host->card_regulator)) { ++ if (PTR_ERR(host->card_regulator) == -EPROBE_DEFER) ++ return PTR_ERR(host->card_regulator); ++ host->card_regulator = NULL; ++ } ++ ++ /* Parse card power/reset/clock control */ ++ if (of_find_property(np, "card-reset-gpios", NULL)) { ++ struct gpio_desc *gpd; ++ int level = 0; ++ ++ /* ++ * If the regulator is enabled, then we can hold the ++ * card in reset with an active high resets. Otherwise, ++ * hold the resets low. ++ */ ++ if (host->card_regulator && regulator_is_enabled(host->card_regulator)) ++ level = 1; ++ ++ for (i = 0; i < ARRAY_SIZE(host->card_reset_gpios); i++) { ++ gpd = devm_gpiod_get_index(host->parent, "card-reset", i); ++ if (IS_ERR(gpd)) { ++ if (PTR_ERR(gpd) == -EPROBE_DEFER) ++ return PTR_ERR(gpd); ++ break; ++ } ++ gpiod_direction_output(gpd, gpiod_is_active_low(gpd) | level); ++ host->card_reset_gpios[i] = gpd; ++ } ++ ++ gpd = devm_gpiod_get_index(host->parent, "card-reset", ARRAY_SIZE(host->card_reset_gpios)); ++ if (!IS_ERR(gpd)) { ++ dev_warn(host->parent, "More reset gpios than we can handle"); ++ gpiod_put(gpd); ++ } ++ } ++ ++ clk = of_clk_get_by_name(np, "card_ext_clock"); ++ if (IS_ERR(clk)) { ++ if (PTR_ERR(clk) == -EPROBE_DEFER) ++ return PTR_ERR(clk); ++ clk = NULL; ++ } ++ host->card_clk = clk; ++ ++ return 0; ++} ++ + /** + * mmc_alloc_host - initialise the per-host structure. + * @extra: sizeof private data structure +@@ -540,6 +604,10 @@ + { + int err; + ++ err = mmc_of_parse_child(host); ++ if (err) ++ return err; ++ + WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) && + !host->ops->enable_sdio_irq); + +diff -Nur linux-3.16.orig/drivers/mmc/host/dw_mmc.c linux-3.16/drivers/mmc/host/dw_mmc.c +--- linux-3.16.orig/drivers/mmc/host/dw_mmc.c 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/drivers/mmc/host/dw_mmc.c 2014-08-11 12:34:22.043702140 +0200 +@@ -2049,6 +2049,8 @@ + if (!mmc) + return -ENOMEM; + ++ mmc_of_parse(mmc); ++ + slot = mmc_priv(mmc); + slot->id = id; + slot->mmc = mmc; +diff -Nur linux-3.16.orig/drivers/mmc/host/Kconfig linux-3.16/drivers/mmc/host/Kconfig +--- linux-3.16.orig/drivers/mmc/host/Kconfig 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/drivers/mmc/host/Kconfig 2014-08-11 12:34:03.391536946 +0200 +@@ -25,8 +25,7 @@ + If unsure, say N. + + config MMC_SDHCI +- tristate "Secure Digital Host Controller Interface support" +- depends on HAS_DMA ++ tristate + help + This selects the generic Secure Digital Host Controller Interface. + It is used by manufacturers such as Texas Instruments(R), Ricoh(R) +@@ -59,7 +58,8 @@ + + config MMC_SDHCI_PCI + tristate "SDHCI support on PCI bus" +- depends on MMC_SDHCI && PCI ++ depends on PCI && HAS_DMA ++ select MMC_SDHCI + help + This selects the PCI Secure Digital Host Controller Interface. + Most controllers found today are PCI devices. +@@ -83,7 +83,8 @@ + + config MMC_SDHCI_ACPI + tristate "SDHCI support for ACPI enumerated SDHCI controllers" +- depends on MMC_SDHCI && ACPI ++ depends on ACPI && HAS_DMA ++ select MMC_SDHCI + help + This selects support for ACPI enumerated SDHCI controllers, + identified by ACPI Compatibility ID PNP0D40 or specific +@@ -94,8 +95,8 @@ + If unsure, say N. + + config MMC_SDHCI_PLTFM +- tristate "SDHCI platform and OF driver helper" +- depends on MMC_SDHCI ++ tristate ++ select MMC_SDHCI + help + This selects the common helper functions support for Secure Digital + Host Controller Interface based platform and OF drivers. +@@ -106,8 +107,8 @@ + + config MMC_SDHCI_OF_ARASAN + tristate "SDHCI OF support for the Arasan SDHCI controllers" +- depends on MMC_SDHCI_PLTFM +- depends on OF ++ depends on OF && HAS_DMA ++ select MMC_SDHCI_PLTFM + help + This selects the Arasan Secure Digital Host Controller Interface + (SDHCI). This hardware is found e.g. in Xilinx' Zynq SoC. +@@ -118,9 +119,9 @@ + + config MMC_SDHCI_OF_ESDHC + tristate "SDHCI OF support for the Freescale eSDHC controller" +- depends on MMC_SDHCI_PLTFM +- depends on PPC_OF ++ depends on PPC_OF && HAS_DMA + select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER ++ select MMC_SDHCI_PLTFM + help + This selects the Freescale eSDHC controller support. + +@@ -130,9 +131,9 @@ + + config MMC_SDHCI_OF_HLWD + tristate "SDHCI OF support for the Nintendo Wii SDHCI controllers" +- depends on MMC_SDHCI_PLTFM +- depends on PPC_OF ++ depends on PPC_OF && HAS_DMA + select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER ++ select MMC_SDHCI_PLTFM + help + This selects the Secure Digital Host Controller Interface (SDHCI) + found in the "Hollywood" chipset of the Nintendo Wii video game +@@ -144,8 +145,8 @@ + + config MMC_SDHCI_CNS3XXX + tristate "SDHCI support on the Cavium Networks CNS3xxx SoC" +- depends on ARCH_CNS3XXX +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_CNS3XXX && HAS_DMA ++ select MMC_SDHCI_PLTFM + help + This selects the SDHCI support for CNS3xxx System-on-Chip devices. + +@@ -155,9 +156,9 @@ + + config MMC_SDHCI_ESDHC_IMX + tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller" +- depends on ARCH_MXC +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_MXC && HAS_DMA + select MMC_SDHCI_IO_ACCESSORS ++ select MMC_SDHCI_PLTFM + help + This selects the Freescale eSDHC/uSDHC controller support + found on i.MX25, i.MX35 i.MX5x and i.MX6x. +@@ -168,9 +169,9 @@ + + config MMC_SDHCI_DOVE + tristate "SDHCI support on Marvell's Dove SoC" +- depends on ARCH_DOVE || MACH_DOVE +- depends on MMC_SDHCI_PLTFM ++ depends on (ARCH_DOVE || MACH_DOVE) && HAS_DMA + select MMC_SDHCI_IO_ACCESSORS ++ select MMC_SDHCI_PLTFM + help + This selects the Secure Digital Host Controller Interface in + Marvell's Dove SoC. +@@ -181,9 +182,9 @@ + + config MMC_SDHCI_TEGRA + tristate "SDHCI platform support for the Tegra SD/MMC Controller" +- depends on ARCH_TEGRA +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_TEGRA && HAS_DMA + select MMC_SDHCI_IO_ACCESSORS ++ select MMC_SDHCI_PLTFM + help + This selects the Tegra SD/MMC controller. If you have a Tegra + platform with SD or MMC devices, say Y or M here. +@@ -192,7 +193,8 @@ + + config MMC_SDHCI_S3C + tristate "SDHCI support on Samsung S3C SoC" +- depends on MMC_SDHCI && PLAT_SAMSUNG ++ depends on PLAT_SAMSUNG && HAS_DMA ++ select MMC_SDHCI + help + This selects the Secure Digital Host Controller Interface (SDHCI) + often referrered to as the HSMMC block in some of the Samsung S3C +@@ -204,8 +206,8 @@ + + config MMC_SDHCI_SIRF + tristate "SDHCI support on CSR SiRFprimaII and SiRFmarco SoCs" +- depends on ARCH_SIRF +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_SIRF && HAS_DMA ++ select MMC_SDHCI_PLTFM + help + This selects the SDHCI support for SiRF System-on-Chip devices. + +@@ -215,8 +217,8 @@ + + config MMC_SDHCI_PXAV3 + tristate "Marvell MMP2 SD Host Controller support (PXAV3)" +- depends on CLKDEV_LOOKUP +- depends on MMC_SDHCI_PLTFM ++ depends on CLKDEV_LOOKUP && HAS_DMA ++ select MMC_SDHCI_PLTFM + default CPU_MMP2 + help + This selects the Marvell(R) PXAV3 SD Host Controller. +@@ -227,8 +229,8 @@ + + config MMC_SDHCI_PXAV2 + tristate "Marvell PXA9XX SD Host Controller support (PXAV2)" +- depends on CLKDEV_LOOKUP +- depends on MMC_SDHCI_PLTFM ++ depends on CLKDEV_LOOKUP && HAS_DMA ++ select MMC_SDHCI_PLTFM + default CPU_PXA910 + help + This selects the Marvell(R) PXAV2 SD Host Controller. +@@ -239,7 +241,8 @@ + + config MMC_SDHCI_SPEAR + tristate "SDHCI support on ST SPEAr platform" +- depends on MMC_SDHCI && PLAT_SPEAR ++ depends on PLAT_SPEAR && HAS_DMA ++ select MMC_SDHCI + help + This selects the Secure Digital Host Controller Interface (SDHCI) + often referrered to as the HSMMC block in some of the ST SPEAR range +@@ -261,8 +264,8 @@ + + config MMC_SDHCI_BCM_KONA + tristate "SDHCI support on Broadcom KONA platform" +- depends on ARCH_BCM_MOBILE +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_BCM_MOBILE && HAS_DMA ++ select MMC_SDHCI_PLTFM + help + This selects the Broadcom Kona Secure Digital Host Controller + Interface(SDHCI) support. +@@ -272,9 +275,9 @@ + + config MMC_SDHCI_BCM2835 + tristate "SDHCI platform support for the BCM2835 SD/MMC Controller" +- depends on ARCH_BCM2835 +- depends on MMC_SDHCI_PLTFM ++ depends on ARCH_BCM2835 && HAS_DMA + select MMC_SDHCI_IO_ACCESSORS ++ select MMC_SDHCI_PLTFM + help + This selects the BCM2835 SD/MMC controller. If you have a BCM2835 + platform with SD or MMC devices, say Y or M here. +diff -Nur linux-3.16.orig/drivers/mmc/host/sdhci.c linux-3.16/drivers/mmc/host/sdhci.c +--- linux-3.16.orig/drivers/mmc/host/sdhci.c 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/drivers/mmc/host/sdhci.c 2014-08-11 12:34:08.763584537 +0200 +@@ -1530,7 +1530,6 @@ + host->ops->set_clock(host, host->clock); + } + +- + /* Reset SD Clock Enable */ + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + clk &= ~SDHCI_CLOCK_CARD_EN; +@@ -1763,9 +1762,6 @@ + ctrl |= SDHCI_CTRL_VDD_180; + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); + +- /* Wait for 5ms */ +- usleep_range(5000, 5500); +- + /* 1.8V regulator output should be stable within 5 ms */ + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (ctrl & SDHCI_CTRL_VDD_180) +diff -Nur linux-3.16.orig/include/linux/mmc/host.h linux-3.16/include/linux/mmc/host.h +--- linux-3.16.orig/include/linux/mmc/host.h 2014-08-04 00:25:02.000000000 +0200 ++++ linux-3.16/include/linux/mmc/host.h 2014-08-11 12:34:15.559644729 +0200 +@@ -298,6 +298,11 @@ + unsigned long clkgate_delay; + #endif + ++ /* card specific properties to deal with power and reset */ ++ struct regulator *card_regulator; /* External VCC needed by the card */ ++ struct gpio_desc *card_reset_gpios[2]; /* External resets, active low */ ++ struct clk *card_clk; /* External clock needed by the card */ ++ + /* host specific block data */ + unsigned int max_seg_size; /* see blk_queue_max_segment_size */ + unsigned short max_segs; /* see blk_queue_max_segments */ -- cgit v1.2.3