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linux/arch/arm/mach-shmobile/board-lager-reference.c

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ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
/*
* Lager board support - Reference DT implementation
*
* Copyright (C) 2013 Renesas Solutions Corp.
* Copyright (C) 2013 Simon Horman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
#include <linux/clk.h>
#include <linux/clkdev.h>
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
#include <linux/init.h>
#include <linux/of_platform.h>
ARM: shmobile: Use ->init_late() on Lager Hook in shmobile_init_late() on Lager V2. This enables some PM related things like CPUIdle and Suspend-to-RAM. With this patch applied it is possible to use Suspend-to-RAM: # echo enabled > /sys/class/tty/ttySC6/power/wakeup # echo mem > /sys/power/state (wake by sending a character on the serial console) Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-11-20 01:02:31 +01:00
#include <mach/common.h>
ARM: shmobile: Cosmetic update of Lager DT Reference Clean up the Lager DT reference board code to make it match Koelsch DT reference including using the rcar-gen2 header. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-10-16 23:58:19 +02:00
#include <mach/rcar-gen2.h>
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
#include <mach/r8a7790.h>
#include <asm/mach/arch.h>
ARM: shmobile: Minor update for the Lager DT reference code Update the Lager DT reference code to get rid of the redundant irqchip header and also make lager_add_standard_devices() static. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-07-08 08:16:46 +02:00
static void __init lager_add_standard_devices(void)
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
{
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
#ifdef CONFIG_COMMON_CLK
/*
ARM: shmobile: lager-reference: Refactor clock lookup hack Make the clock lookup hack more generic to ease the addition of more devices. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-02-16 22:31:58 +01:00
* This is a really crude hack to provide clkdev support to platform
* devices until they get moved to DT.
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
*/
ARM: shmobile: lager-reference: Refactor clock lookup hack Make the clock lookup hack more generic to ease the addition of more devices. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-02-16 22:31:58 +01:00
static const struct clk_name {
const char *clk;
const char *con_id;
const char *dev_id;
} clk_names[] = {
{ "cmt0", NULL, "sh_cmt.0" },
{ "scifa0", NULL, "sh-sci.0" },
{ "scifa1", NULL, "sh-sci.1" },
{ "scifb0", NULL, "sh-sci.2" },
{ "scifb1", NULL, "sh-sci.3" },
{ "scifb2", NULL, "sh-sci.4" },
{ "scifa2", NULL, "sh-sci.5" },
{ "scif0", NULL, "sh-sci.6" },
{ "scif1", NULL, "sh-sci.7" },
{ "hscif0", NULL, "sh-sci.8" },
{ "hscif1", NULL, "sh-sci.9" },
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
};
struct clk *clk;
unsigned int i;
ARM: shmobile: lager-reference: Refactor clock lookup hack Make the clock lookup hack more generic to ease the addition of more devices. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-02-16 22:31:58 +01:00
for (i = 0; i < ARRAY_SIZE(clk_names); ++i) {
clk = clk_get(NULL, clk_names[i].clk);
ARM: shmobile: lager: fix error return code check from clk_get() The lager_add_standard_devices() function calls clk_get() but then fails to check that it returns an error pointer instead of NULL on failure. This was added by 4a606af2 ("ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT") patch in Simon Horman's renesas-boards2-for-v3.14 tag. The issue is not serious as it does not cause a crash and seems to not be actually causing any issues now the other clock bugs have been fixed. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [horms+renesas@verge.net.au: tweaked changelog] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-01-14 19:43:26 +01:00
if (!IS_ERR(clk)) {
ARM: shmobile: lager-reference: Refactor clock lookup hack Make the clock lookup hack more generic to ease the addition of more devices. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-02-16 22:31:58 +01:00
clk_register_clkdev(clk, clk_names[i].con_id,
clk_names[i].dev_id);
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
clk_put(clk);
}
}
#else
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
r8a7790_clock_init();
ARM: shmobile: lager-reference: Enable multiplaform kernel support Enable multiplaform ARM architecture support for the Lager reference board. Common clock framework initialization will be handled by the rcar_gen2_init_timer() call, we just need to remove the legacy clock code initialization. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:52 +01:00
#endif
ARM: shmobile: lager-reference: Instantiate clkdevs for SCIF and CMT Now that the common clock framework is supported, the clock lookup entries in clock-r8a7790.c are not registered anymore. Devices must instead reference their clocks in the device tree. However, SCIF and CMT devices are still instantiated through platform code, and thus need a clock lookup entry. Retrieve the SCIF and CMT clock entries by name and register clkdevs for the corresponding devices. This will be removed when the SCIF and CMT devices will be instantiated from the device tree. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:54 +01:00
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
r8a7790_add_dt_devices();
ARM: shmobile: Cosmetic update of Lager DT Reference Clean up the Lager DT reference board code to make it match Koelsch DT reference including using the rcar-gen2 header. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-10-16 23:58:19 +02:00
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
}
static const char *lager_boards_compat_dt[] __initdata = {
ARM: shmobile: Let Lager multiplatform boot with Lager DTB Let the multiplatform Lager support boot with the legacy DTS for Lager as well as the Lager reference DTS. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-12-11 15:13:58 +01:00
"renesas,lager",
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
"renesas,lager-reference",
NULL,
};
DT_MACHINE_START(LAGER_DT, "lager")
ARM: shmobile: Add r8a7790 SMP support using APMU code Add r8a7790 SMP support using the shared APMU code. To enable SMP the r8a7790 specific DTS needs to be updated to include CPU cores, and this is happening in a separate patch. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-08-29 01:22:07 +02:00
.smp = smp_ops(r8a7790_smp_ops),
ARM: shmobile: Rename to r8a7790_init_early() Rename r8a7790_init_delay() into r8a7790_init_early() to make the function name show that more than just delay setup may happen in the future. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-08-08 00:27:01 +02:00
.init_early = r8a7790_init_early,
ARM: shmobile: Break out R-Car Gen2 setup code Move arch timer workaround code and boot mode pin handling from setup-r8a7790.c to setup-rcar-gen2.c. With this in place the same code can be used on other R-Car Generation 2 devices such as r8a7791. Signed-off-by: Magnus Damm <damm@opensource.se> [horms+renesas@verge.net.au trivial rebase of board-lager.c for introduction of lager_add_standard_devices()] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-09-12 02:32:49 +02:00
.init_time = rcar_gen2_timer_init,
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
.init_machine = lager_add_standard_devices,
ARM: shmobile: Use ->init_late() on Lager Hook in shmobile_init_late() on Lager V2. This enables some PM related things like CPUIdle and Suspend-to-RAM. With this patch applied it is possible to use Suspend-to-RAM: # echo enabled > /sys/class/tty/ttySC6/power/wakeup # echo mem > /sys/power/state (wake by sending a character on the serial console) Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-11-20 01:02:31 +01:00
.init_late = shmobile_init_late,
ARM: shmobile: lager: Add DT reference This is sufficient to allow boot of the Lager board with a console without boards-lager.c compiled into the kernel. This is an example of a minimal but still useful initialisation of the board using DT as much as possible. As such it is the same as the boot of Lager that can be achieved without a board file. The intention of adding this file is to facilitate further work to allow board specific devices to be initialised via DT. Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-06-28 06:42:16 +02:00
.dt_compat = lager_boards_compat_dt,
MACHINE_END