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linux/arch/arm/mach-at91/board-dt-sama5.c

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ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
/*
* Setup code for SAMA5 Evaluation Kits with Device Tree support
*
* Copyright (C) 2013 Atmel,
* 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
*
* Licensed under GPLv2 or later.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/micrel_phy.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
ARM: at91: prepare sama5 dt boards transition to common clk This patch prepare the transition to common clk for sama5 dt boards by replacing the timer init callback. Clocks registration cannot be done in early init callback (as formerly done by the old clk implementation) because it requires dynamic allocation which is not ready yet during early init. In the other hand, at91 clocks must be registered before at91sam926x_pit_init is called because PIT (Periodic Interval Timer) driver request the master clk (mck). A new function (at91sama5_dt_timer_init) is created to fullfil these needs. This function registers all at91 clks using the dt definition before calling the PIT init function. The device tree clock registration is enabled only if common clk is selected. Else the old clk registration is been done during at91_dt_initialize call. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-10-11 20:43:31 +08:00
#include <linux/clk-provider.h>
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include "at91_aic.h"
#include "generic.h"
static int ksz9021rn_phy_fixup(struct phy_device *phy)
{
int value;
/* Set delay values */
phy: micrel: Add definitions for common Micrel PHY registers Add defines for common Micrel PHY setups so that other platforms can use them. Update imx61 and sama5 hardware to use the micrel_phy.h PHY defines. Also add support for the KSZ9021RLRN PHY. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: David S. Miller <davem@davemloft.net> CC: Andrew Victor <linux@maxim.org.za> CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-08-13 22:59:00 +08:00
value = MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW | 0x8000;
phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
value = 0xF2F4;
phy: micrel: Add definitions for common Micrel PHY registers Add defines for common Micrel PHY setups so that other platforms can use them. Update imx61 and sama5 hardware to use the micrel_phy.h PHY defines. Also add support for the KSZ9021RLRN PHY. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: David S. Miller <davem@davemloft.net> CC: Andrew Victor <linux@maxim.org.za> CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-08-13 22:59:00 +08:00
phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
value = MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW | 0x8000;
phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
value = 0x2222;
phy: micrel: Add definitions for common Micrel PHY registers Add defines for common Micrel PHY setups so that other platforms can use them. Update imx61 and sama5 hardware to use the micrel_phy.h PHY defines. Also add support for the KSZ9021RLRN PHY. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: David S. Miller <davem@davemloft.net> CC: Andrew Victor <linux@maxim.org.za> CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-08-13 22:59:00 +08:00
phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
return 0;
}
static void __init sama5_dt_device_init(void)
{
ARM: at91: Fix link breakage when !CONFIG_PHYLIB Fixes: arch/arm/mach-at91/built-in.o: In function `ksz9021rn_phy_fixup': :(.text+0x1174): undefined reference to `mdiobus_write' :(.text+0x1188): undefined reference to `mdiobus_write' :(.text+0x119c): undefined reference to `mdiobus_write' :(.text+0x11b0): undefined reference to `mdiobus_write' arch/arm/mach-at91/built-in.o: In function `sama5_dt_device_init': :(.init.text+0x1e34): undefined reference to `phy_register_fixup_for_uid' when CONFIG_PHYLIB is not selected. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-05 17:50:43 +08:00
if (of_machine_is_compatible("atmel,sama5d3xcm") &&
IS_ENABLED(CONFIG_PHYLIB))
ARM: at91: introduce SAMA5 support This patch introduces the SAMA5 support and a generic board file for SAMA5 devices. It also updates the PMC driver to manage clock division which is a requirement since some peripherals can't work at the bus frequency on SAMA5. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-03-22 21:24:12 +08:00
phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
ksz9021rn_phy_fixup);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *sama5_dt_board_compat[] __initdata = {
"atmel,sama5",
NULL
};
DT_MACHINE_START(sama5_dt, "Atmel SAMA5 (Device Tree)")
/* Maintainer: Atmel */
.map_io = at91_map_io,
.init_early = at91_dt_initialize,
.init_machine = sama5_dt_device_init,
.dt_compat = sama5_dt_board_compat,
MACHINE_END
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