From 94833a42765509a7aa95ed1ba7b227ead3c29c08 Mon Sep 17 00:00:00 2001 From: Andy Fleming Date: Fri, 2 May 2008 18:56:41 -0500 Subject: [POWERPC] 85xx: Add 8568 PHY workarounds to board code The 8568 MDS needs some configuration changes to the PHY in order to work properly. These are done in the firmware, normally, but Linux shouldn't need to rely on the firmware running such things (someone could disable the PHY support in the firmware to save space, for instance). Signed-off-by: Andy Fleming Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/mpc85xx_mds.c | 119 ++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) (limited to 'arch/powerpc/platforms/85xx') diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 25f8bc75e838..decae09e5146 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include @@ -56,6 +57,95 @@ #define DBG(fmt...) #endif +#define MV88E1111_SCR 0x10 +#define MV88E1111_SCR_125CLK 0x0010 +static int mpc8568_fixup_125_clock(struct phy_device *phydev) +{ + int scr; + int err; + + /* Workaround for the 125 CLK Toggle */ + scr = phy_read(phydev, MV88E1111_SCR); + + if (scr < 0) + return scr; + + err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK)); + + if (err) + return err; + + err = phy_write(phydev, MII_BMCR, BMCR_RESET); + + if (err) + return err; + + scr = phy_read(phydev, MV88E1111_SCR); + + if (scr < 0) + return err; + + err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008); + + return err; +} + +static int mpc8568_mds_phy_fixups(struct phy_device *phydev) +{ + int temp; + int err; + + /* Errata */ + err = phy_write(phydev,29, 0x0006); + + if (err) + return err; + + temp = phy_read(phydev, 30); + + if (temp < 0) + return temp; + + temp = (temp & (~0x8000)) | 0x4000; + err = phy_write(phydev,30, temp); + + if (err) + return err; + + err = phy_write(phydev,29, 0x000a); + + if (err) + return err; + + temp = phy_read(phydev, 30); + + if (temp < 0) + return temp; + + temp = phy_read(phydev, 30); + + if (temp < 0) + return temp; + + temp &= ~0x0020; + + err = phy_write(phydev,30,temp); + + if (err) + return err; + + /* Disable automatic MDI/MDIX selection */ + temp = phy_read(phydev, 16); + + if (temp < 0) + return temp; + + temp &= ~0x0060; + err = phy_write(phydev,16,temp); + + return err; +} + /* ************************************************************************ * * Setup the architecture @@ -138,6 +228,35 @@ static void __init mpc85xx_mds_setup_arch(void) #endif /* CONFIG_QUICC_ENGINE */ } + +static int __init board_fixups(void) +{ + char phy_id[BUS_ID_SIZE]; + char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"}; + struct device_node *mdio; + struct resource res; + int i; + + for (i = 0; i < ARRAY_SIZE(compstrs); i++) { + mdio = of_find_compatible_node(NULL, NULL, compstrs[i]); + + of_address_to_resource(mdio, 0, &res); + snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 1); + + phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock); + phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); + + /* Register a workaround for errata */ + snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", res.start, 7); + phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); + + of_node_put(mdio); + } + + return 0; +} +machine_arch_initcall(mpc85xx_mds, board_fixups); + static struct of_device_id mpc85xx_ids[] = { { .type = "soc", }, { .compatible = "soc", }, -- cgit v1.2.3 From 73f5b8f942d6a2f178061dbbf9bcc54ca68ddf39 Mon Sep 17 00:00:00 2001 From: Andy Fleming Date: Fri, 2 May 2008 13:03:22 -0500 Subject: [POWERPC] 85xx: Fix some sparse warnings for 85xx MDS Signed-off-by: Andy Fleming Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/mpc85xx_mds.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/platforms/85xx') diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index decae09e5146..43a459f63e31 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -154,7 +154,7 @@ static int mpc8568_mds_phy_fixups(struct phy_device *phydev) static void __init mpc85xx_mds_setup_arch(void) { struct device_node *np; - static u8 *bcsr_regs = NULL; + static u8 __iomem *bcsr_regs = NULL; if (ppc_md.progress) ppc_md.progress("mpc85xx_mds_setup_arch()", 0); -- cgit v1.2.3 From bfd123bf91704b88093673e615cc93329f820ab4 Mon Sep 17 00:00:00 2001 From: Jeremy McNicoll Date: Mon, 5 May 2008 18:17:24 -0400 Subject: [POWERPC] 85xx: SBC8548 - Add flash support and HW Rev reporting The following adds local bus, flash and MTD partition nodes for sbc8548. As well, a compatible field for the soc node, so that of_platform_bus_probe() will pick it up. Something that is provided through this newly added epld node is the Hardware Revision which is now being utilized. Signed-off-by: Jeremy McNicoll Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/sbc8548.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/platforms/85xx') diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c index 488facb99fe8..b9246ea0928a 100644 --- a/arch/powerpc/platforms/85xx/sbc8548.c +++ b/arch/powerpc/platforms/85xx/sbc8548.c @@ -49,6 +49,8 @@ #include #include +static int sbc_rev; + static void __init sbc8548_pic_init(void) { struct mpic *mpic; @@ -79,6 +81,30 @@ static void __init sbc8548_pic_init(void) mpic_init(mpic); } +/* Extract the HW Rev from the EPLD on the board */ +static int __init sbc8548_hw_rev(void) +{ + struct device_node *np; + struct resource res; + unsigned int *rev; + int board_rev = 0; + + np = of_find_compatible_node(NULL, NULL, "hw-rev"); + if (np == NULL) { + printk("No HW-REV found in DTB.\n"); + return -ENODEV; + } + + of_address_to_resource(np, 0, &res); + of_node_put(np); + + rev = ioremap(res.start,sizeof(unsigned int)); + board_rev = (*rev) >> 28; + iounmap(rev); + + return board_rev; +} + /* * Setup the architecture */ @@ -104,6 +130,7 @@ static void __init sbc8548_setup_arch(void) } } #endif + sbc_rev = sbc8548_hw_rev(); } static void sbc8548_show_cpuinfo(struct seq_file *m) @@ -115,7 +142,7 @@ static void sbc8548_show_cpuinfo(struct seq_file *m) svid = mfspr(SPRN_SVR); seq_printf(m, "Vendor\t\t: Wind River\n"); - seq_printf(m, "Machine\t\t: SBC8548\n"); + seq_printf(m, "Machine\t\t: SBC8548 v%d\n", sbc_rev); seq_printf(m, "PVR\t\t: 0x%x\n", pvid); seq_printf(m, "SVR\t\t: 0x%x\n", svid); @@ -130,6 +157,7 @@ static void sbc8548_show_cpuinfo(struct seq_file *m) static struct of_device_id __initdata of_bus_ids[] = { { .name = "soc", }, { .type = "soc", }, + { .compatible = "simple-bus", }, {}, }; -- cgit v1.2.3 From c4ea896476d30514109f61f1a6e0d8e2b201e401 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Tue, 3 Jun 2008 13:36:19 -0500 Subject: [POWERPC] 85xx: MPC85xx MDS - Unconditionally select PHYLIB for board fixups The MPC85xx MDS board requires some board level tweaks of the PHYs that either the eTSEC (gianfar) or UCC ethernet controllers are connected to. Its possible to build the phylib as a module, however this breaks the board level fix ups because phy_read and phy_write are not available if we build as a module. So we unconditionally select PHYLIB to ensure its built into the kernel if we are building in MPC85xx MDS support. This was determined to be the easiest soultion even though it prevents the user from removing PHYLIB support if they decide they don't want it. Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/platforms/85xx') diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 7ff29d53dc2d..ecbe580c3f32 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -34,6 +34,7 @@ config MPC85xx_MDS bool "Freescale MPC85xx MDS" select DEFAULT_UIMAGE select QUICC_ENGINE + select PHYLIB help This option enables support for the MPC85xx MDS board -- cgit v1.2.3