From patchwork Thu Jul 10 07:26:37 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 368486 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id C2494140141 for ; Thu, 10 Jul 2014 17:27:54 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751628AbaGJH1y (ORCPT ); Thu, 10 Jul 2014 03:27:54 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:48326 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751541AbaGJH1x (ORCPT ); Thu, 10 Jul 2014 03:27:53 -0400 Received: by mail-pa0-f47.google.com with SMTP id kq14so10488864pab.6 for ; Thu, 10 Jul 2014 00:27:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=6Y28BIq64hzibjjA8i7B/M9F7vaJsdBYlMopB3PFMAE=; b=V5RjyeTsgoyr5n0xnGzxhBMpNzYz5mLc41TmhKsCWnneOOUsbg5a8HHOuZodw+Yj9i S3rLEJM27NJO7+bHkdMxo2CoehOUeDpp9FJm3u0pyvs7F5SiwinKc8+OcZ2AGOKtX29A eR9jO62jdpTHSEPm/TlFoWstmQ9Oy2KuJhhwjumremdxgm9B0pACwlMuYmCVvQgH+hrn fsm8lZpAivxLxDIpWbhnWnZ2MHAyApQ8b12nszfGrwHLCs7DP7tqLxIlOtH8s4WSLBiI gUYvMYbh63aVkoVlllErS+h2qGqjMqJ25QhvcF2+OR/naT/wfABiIt9rlYmH1pkJ0xoc vBQw== X-Gm-Message-State: ALoCoQn7g2QxKVP+TtdUkdOMsKSNIq5hEKasd65Yuq8IKoCtV5UXeN343ODhTB/sIc7Eyx2SeSbq X-Received: by 10.70.41.225 with SMTP id i1mr15778631pdl.92.1404977272995; Thu, 10 Jul 2014 00:27:52 -0700 (PDT) Received: from localhost ([122.167.123.210]) by mx.google.com with ESMTPSA id ce9sm31280502pdb.49.2014.07.10.00.27.48 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 10 Jul 2014 00:27:52 -0700 (PDT) From: Viresh Kumar To: arnd@linaro.org, olof@lixom.net Cc: linux-arm-kernel@lists.infradead.org, spear-devel@list.st.com, b.zolnierkie@samsung.com, bhelgaas@google.com, mark@nicholnet.com, linux-pci@vger.kernel.org, Pratyush Anand , Mohit Kumar , Viresh Kumar Subject: [PATCH V9 6/7] ARM: SPEAr13xx: Add pcie and miphy DT nodes Date: Thu, 10 Jul 2014 12:56:37 +0530 Message-Id: X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: References: In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Pratyush Anand This patch adds necessary DT nodes for pcie controllers and miphys for SPEAr13xx SoCs. SPEAr1310 has 3 PCIe ports and SPEAr1340 has 1, which are multiplexed with ahci/sata pins. By default evaluation board of both controller works in ahci mode. Because of this, these nodes are marked "disabled" by default. In order to use pcie controller on evaluation boards do necessary modifications on board and enable (By replacing "disabled" with "okay") pcie and miphy from respective 'evb' dtsi file. Phy specific initialization was previously done from spear1340.c, which isn't required anymore as we have separate drivers for it. Remove it. Acked-by: Arnd Bergmann Acked-by: Viresh Kumar Signed-off-by: Pratyush Anand Signed-off-by: Mohit Kumar [viresh: fixed logs/cclist/checkpatch warnings, clubbed multiple patches into one] Signed-off-by: Viresh Kumar --- arch/arm/boot/dts/spear1310-evb.dts | 4 ++ arch/arm/boot/dts/spear1310.dtsi | 93 ++++++++++++++++++++++++++- arch/arm/boot/dts/spear1340-evb.dts | 4 ++ arch/arm/boot/dts/spear1340.dtsi | 30 ++++++++- arch/arm/boot/dts/spear13xx.dtsi | 4 +- arch/arm/mach-spear/Kconfig | 3 + arch/arm/mach-spear/spear1340.c | 125 +----------------------------------- 7 files changed, 133 insertions(+), 130 deletions(-) diff --git a/arch/arm/boot/dts/spear1310-evb.dts b/arch/arm/boot/dts/spear1310-evb.dts index b56a801..d42c84b 100644 --- a/arch/arm/boot/dts/spear1310-evb.dts +++ b/arch/arm/boot/dts/spear1310-evb.dts @@ -106,6 +106,10 @@ status = "okay"; }; + miphy@eb800000 { + status = "okay"; + }; + cf@b2800000 { status = "okay"; }; diff --git a/arch/arm/boot/dts/spear1310.dtsi b/arch/arm/boot/dts/spear1310.dtsi index 122ae94..fa5f2bb 100644 --- a/arch/arm/boot/dts/spear1310.dtsi +++ b/arch/arm/boot/dts/spear1310.dtsi @@ -29,24 +29,111 @@ #gpio-cells = <2>; }; - ahci@b1000000 { + miphy0: miphy@eb800000 { + compatible = "st,spear1310-miphy"; + reg = <0xeb800000 0x4000>; + misc = <&misc>; + phy-id = <0>; + #phy-cells = <1>; + status = "disabled"; + }; + + miphy1: miphy@eb804000 { + compatible = "st,spear1310-miphy"; + reg = <0xeb804000 0x4000>; + misc = <&misc>; + phy-id = <1>; + #phy-cells = <1>; + status = "disabled"; + }; + + miphy2: miphy@eb808000 { + compatible = "st,spear1310-miphy"; + reg = <0xeb808000 0x4000>; + misc = <&misc>; + phy-id = <2>; + #phy-cells = <1>; + status = "disabled"; + }; + + ahci0: ahci@b1000000 { compatible = "snps,spear-ahci"; reg = <0xb1000000 0x10000>; interrupts = <0 68 0x4>; + phys = <&miphy0 0>; + phy-names = "sata-phy"; status = "disabled"; }; - ahci@b1800000 { + ahci1: ahci@b1800000 { compatible = "snps,spear-ahci"; reg = <0xb1800000 0x10000>; interrupts = <0 69 0x4>; + phys = <&miphy1 0>; + phy-names = "sata-phy"; status = "disabled"; }; - ahci@b4000000 { + ahci2: ahci@b4000000 { compatible = "snps,spear-ahci"; reg = <0xb4000000 0x10000>; interrupts = <0 70 0x4>; + phys = <&miphy2 0>; + phy-names = "sata-phy"; + status = "disabled"; + }; + + pcie0: pcie@b1000000 { + compatible = "st,spear1340-pcie", "snps,dw-pcie"; + reg = <0xb1000000 0x4000>; + interrupts = <0 68 0x4>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0x0 0 &gic 0 68 0x4>; + num-lanes = <1>; + phys = <&miphy0 1>; + phy-names = "pcie-phy"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x00000800 0 0x80000000 0x80000000 0 0x00020000 /* configuration space */ + 0x81000000 0 0 0x80020000 0 0x00010000 /* downstream I/O */ + 0x82000000 0 0x80030000 0xc0030000 0 0x0ffd0000>; /* non-prefetchable memory */ + status = "disabled"; + }; + + pcie1: pcie@b1800000 { + compatible = "st,spear1340-pcie", "snps,dw-pcie"; + reg = <0xb1800000 0x4000>; + interrupts = <0 69 0x4>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0x0 0 &gic 0 69 0x4>; + num-lanes = <1>; + phys = <&miphy1 1>; + phy-names = "pcie-phy"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x00000800 0 0x90000000 0x90000000 0 0x00020000 /* configuration space */ + 0x81000000 0 0 0x90020000 0 0x00010000 /* downstream I/O */ + 0x82000000 0 0x90030000 0x90030000 0 0x0ffd0000>; /* non-prefetchable memory */ + status = "disabled"; + }; + + pcie2: pcie@b4000000 { + compatible = "st,spear1340-pcie", "snps,dw-pcie"; + reg = <0xb4000000 0x4000>; + interrupts = <0 70 0x4>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0x0 0 &gic 0 70 0x4>; + num-lanes = <1>; + phys = <&miphy2 1>; + phy-names = "pcie-phy"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x00000800 0 0xc0000000 0xc0000000 0 0x00020000 /* configuration space */ + 0x81000000 0 0 0xc0020000 0 0x00010000 /* downstream I/O */ + 0x82000000 0 0xc0030000 0xc0030000 0 0x0ffd0000>; /* non-prefetchable memory */ status = "disabled"; }; diff --git a/arch/arm/boot/dts/spear1340-evb.dts b/arch/arm/boot/dts/spear1340-evb.dts index d6c30ae..b23e05e 100644 --- a/arch/arm/boot/dts/spear1340-evb.dts +++ b/arch/arm/boot/dts/spear1340-evb.dts @@ -122,6 +122,10 @@ status = "okay"; }; + miphy@eb800000 { + status = "okay"; + }; + dma@ea800000 { status = "okay"; }; diff --git a/arch/arm/boot/dts/spear1340.dtsi b/arch/arm/boot/dts/spear1340.dtsi index 54d128d..e71df0f 100644 --- a/arch/arm/boot/dts/spear1340.dtsi +++ b/arch/arm/boot/dts/spear1340.dtsi @@ -31,10 +31,38 @@ status = "disabled"; }; - ahci@b1000000 { + miphy0: miphy@eb800000 { + compatible = "st,spear1340-miphy"; + reg = <0xeb800000 0x4000>; + misc = <&misc>; + #phy-cells = <1>; + status = "disabled"; + }; + + ahci0: ahci@b1000000 { compatible = "snps,spear-ahci"; reg = <0xb1000000 0x10000>; interrupts = <0 72 0x4>; + phys = <&miphy0 0>; + phy-names = "sata-phy"; + status = "disabled"; + }; + + pcie0: pcie@b1000000 { + compatible = "st,spear1340-pcie", "snps,dw-pcie"; + reg = <0xb1000000 0x4000>; + interrupts = <0 68 0x4>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0x0 0 &gic 0 68 0x4>; + num-lanes = <1>; + phys = <&miphy0 1>; + phy-names = "pcie-phy"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x00000800 0 0x80000000 0x80000000 0 0x00020000 /* configuration space */ + 0x81000000 0 0 0x80020000 0 0x00010000 /* downstream I/O */ + 0x82000000 0 0x80030000 0xc0030000 0 0x0ffd0000>; /* non-prefetchable memory */ status = "disabled"; }; diff --git a/arch/arm/boot/dts/spear13xx.dtsi b/arch/arm/boot/dts/spear13xx.dtsi index 3a72508..a6eb543 100644 --- a/arch/arm/boot/dts/spear13xx.dtsi +++ b/arch/arm/boot/dts/spear13xx.dtsi @@ -83,8 +83,8 @@ #size-cells = <1>; compatible = "simple-bus"; ranges = <0x50000000 0x50000000 0x10000000 - 0xb0000000 0xb0000000 0x10000000 - 0xd0000000 0xd0000000 0x02000000 + 0x80000000 0x80000000 0x20000000 + 0xb0000000 0xb0000000 0x22000000 0xd8000000 0xd8000000 0x01000000 0xe0000000 0xe0000000 0x10000000>; diff --git a/arch/arm/mach-spear/Kconfig b/arch/arm/mach-spear/Kconfig index ba57677..6fd4dc8 100644 --- a/arch/arm/mach-spear/Kconfig +++ b/arch/arm/mach-spear/Kconfig @@ -20,6 +20,7 @@ config ARCH_SPEAR13XX select HAVE_ARM_TWD if SMP select PINCTRL select MFD_SYSCON + select MIGHT_HAVE_PCI help Supports for ARM's SPEAR13XX family @@ -28,12 +29,14 @@ if ARCH_SPEAR13XX config MACH_SPEAR1310 bool "SPEAr1310 Machine support with Device Tree" select PINCTRL_SPEAR1310 + select PHY_ST_SPEAR1310_MIPHY help Supports ST SPEAr1310 machine configured via the device-tree config MACH_SPEAR1340 bool "SPEAr1340 Machine support with Device Tree" select PINCTRL_SPEAR1340 + select PHY_ST_SPEAR1340_MIPHY help Supports ST SPEAr1340 machine configured via the device-tree diff --git a/arch/arm/mach-spear/spear1340.c b/arch/arm/mach-spear/spear1340.c index 7b6bff7..3f3c0f1 100644 --- a/arch/arm/mach-spear/spear1340.c +++ b/arch/arm/mach-spear/spear1340.c @@ -13,136 +13,13 @@ #define pr_fmt(fmt) "SPEAr1340: " fmt -#include -#include -#include #include #include #include "generic.h" -#include - -/* FIXME: Move SATA PHY code into a standalone driver */ - -/* Base addresses */ -#define SPEAR1340_SATA_BASE UL(0xB1000000) - -/* Power Management Registers */ -#define SPEAR1340_PCM_CFG (VA_MISC_BASE + 0x100) -#define SPEAR1340_PCM_WKUP_CFG (VA_MISC_BASE + 0x104) -#define SPEAR1340_SWITCH_CTR (VA_MISC_BASE + 0x108) - -#define SPEAR1340_PERIP1_SW_RST (VA_MISC_BASE + 0x318) -#define SPEAR1340_PERIP2_SW_RST (VA_MISC_BASE + 0x31C) -#define SPEAR1340_PERIP3_SW_RST (VA_MISC_BASE + 0x320) - -/* PCIE - SATA configuration registers */ -#define SPEAR1340_PCIE_SATA_CFG (VA_MISC_BASE + 0x424) - /* PCIE CFG MASks */ - #define SPEAR1340_PCIE_CFG_DEVICE_PRESENT (1 << 11) - #define SPEAR1340_PCIE_CFG_POWERUP_RESET (1 << 10) - #define SPEAR1340_PCIE_CFG_CORE_CLK_EN (1 << 9) - #define SPEAR1340_PCIE_CFG_AUX_CLK_EN (1 << 8) - #define SPEAR1340_SATA_CFG_TX_CLK_EN (1 << 4) - #define SPEAR1340_SATA_CFG_RX_CLK_EN (1 << 3) - #define SPEAR1340_SATA_CFG_POWERUP_RESET (1 << 2) - #define SPEAR1340_SATA_CFG_PM_CLK_EN (1 << 1) - #define SPEAR1340_PCIE_SATA_SEL_PCIE (0) - #define SPEAR1340_PCIE_SATA_SEL_SATA (1) - #define SPEAR1340_SATA_PCIE_CFG_MASK 0xF1F - #define SPEAR1340_PCIE_CFG_VAL (SPEAR1340_PCIE_SATA_SEL_PCIE | \ - SPEAR1340_PCIE_CFG_AUX_CLK_EN | \ - SPEAR1340_PCIE_CFG_CORE_CLK_EN | \ - SPEAR1340_PCIE_CFG_POWERUP_RESET | \ - SPEAR1340_PCIE_CFG_DEVICE_PRESENT) - #define SPEAR1340_SATA_CFG_VAL (SPEAR1340_PCIE_SATA_SEL_SATA | \ - SPEAR1340_SATA_CFG_PM_CLK_EN | \ - SPEAR1340_SATA_CFG_POWERUP_RESET | \ - SPEAR1340_SATA_CFG_RX_CLK_EN | \ - SPEAR1340_SATA_CFG_TX_CLK_EN) - -#define SPEAR1340_PCIE_MIPHY_CFG (VA_MISC_BASE + 0x428) - #define SPEAR1340_MIPHY_OSC_BYPASS_EXT (1 << 31) - #define SPEAR1340_MIPHY_CLK_REF_DIV2 (1 << 27) - #define SPEAR1340_MIPHY_CLK_REF_DIV4 (2 << 27) - #define SPEAR1340_MIPHY_CLK_REF_DIV8 (3 << 27) - #define SPEAR1340_MIPHY_PLL_RATIO_TOP(x) (x << 0) - #define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA \ - (SPEAR1340_MIPHY_OSC_BYPASS_EXT | \ - SPEAR1340_MIPHY_CLK_REF_DIV2 | \ - SPEAR1340_MIPHY_PLL_RATIO_TOP(60)) - #define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK \ - (SPEAR1340_MIPHY_PLL_RATIO_TOP(120)) - #define SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE \ - (SPEAR1340_MIPHY_OSC_BYPASS_EXT | \ - SPEAR1340_MIPHY_PLL_RATIO_TOP(25)) - -/* SATA device registration */ -static int sata_miphy_init(struct device *dev, void __iomem *addr) -{ - writel(SPEAR1340_SATA_CFG_VAL, SPEAR1340_PCIE_SATA_CFG); - writel(SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK, - SPEAR1340_PCIE_MIPHY_CFG); - /* Switch on sata power domain */ - writel((readl(SPEAR1340_PCM_CFG) | (0x800)), SPEAR1340_PCM_CFG); - msleep(20); - /* Disable PCIE SATA Controller reset */ - writel((readl(SPEAR1340_PERIP1_SW_RST) & (~0x1000)), - SPEAR1340_PERIP1_SW_RST); - msleep(20); - - return 0; -} - -void sata_miphy_exit(struct device *dev) -{ - writel(0, SPEAR1340_PCIE_SATA_CFG); - writel(0, SPEAR1340_PCIE_MIPHY_CFG); - - /* Enable PCIE SATA Controller reset */ - writel((readl(SPEAR1340_PERIP1_SW_RST) | (0x1000)), - SPEAR1340_PERIP1_SW_RST); - msleep(20); - /* Switch off sata power domain */ - writel((readl(SPEAR1340_PCM_CFG) & (~0x800)), SPEAR1340_PCM_CFG); - msleep(20); -} - -int sata_suspend(struct device *dev) -{ - if (dev->power.power_state.event == PM_EVENT_FREEZE) - return 0; - - sata_miphy_exit(dev); - - return 0; -} - -int sata_resume(struct device *dev) -{ - if (dev->power.power_state.event == PM_EVENT_THAW) - return 0; - - return sata_miphy_init(dev, NULL); -} - -static struct ahci_platform_data sata_pdata = { - .init = sata_miphy_init, - .exit = sata_miphy_exit, - .suspend = sata_suspend, - .resume = sata_resume, -}; - -/* Add SPEAr1340 auxdata to pass platform data */ -static struct of_dev_auxdata spear1340_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("snps,spear-ahci", SPEAR1340_SATA_BASE, NULL, - &sata_pdata), - {} -}; static void __init spear1340_dt_init(void) { - of_platform_populate(NULL, of_default_bus_match_table, - spear1340_auxdata_lookup, NULL); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); platform_device_register_simple("spear-cpufreq", -1, NULL, 0); }