summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/armv7/s5p-common
AgeCommit message (Collapse)Author
2016-05-25exynos: pwm: Add a driver for the exynos5 PWMSimon Glass
This driver supports the standard PWM API. There are 5 PWMs. Four are used normally and the last is normally used as a timer. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2015-11-02s5p: cpu_info: print "cpu-model" if exists in dtsPrzemyslaw Marczak
The CPU name for Exynos was concatenated with cpu id, but for new Exynos platforms, like Chromebook Peach Pi based on Exynos5800, the name of SoC variant does not include the real SoC cpu id (0x5422). For such case, the CPU name should be defined in device tree. This commit introduces new device-tree property for Exynos: - "cpu-model" - with cpu name string If defined, then the cpu id is not printed. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Anand Moon <linux.amoon@gmail.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2015-08-05exynos: Tidy up CPU frequency displaySimon Glass
Line up the display with the line below, e.g.: CPU: Exynos5250 @ 1.7 GHz Model: Google Spring DRAM: 2 GiB MMC: EXYNOS DWMMC: 0 Also show the speed as GHz where appropriate. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-10-31armv7: convert makefiles to Kbuild styleMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-14Coding Style cleanup: remove trailing white spaceWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-06-26exynos: Avoid function instrumentation for microsecond timerSimon Glass
For tracing to work it has to be able to access the microsecond timer without causing a recursive call to the function entry/exit handlers. Add attributes to the relevant functions to support this. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2013-06-04exynos: update tzpc to make it common for exynos4 and exynos5Inderpal Singh
This requires that cpu_is_exynos4/5 should be made available before tzpc_init. Hence this patch also makes necessary changes to have cpu_info in spl and invokes arch_cpu_init before tzpc_init in low_level_init.S for smdk5250. Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org> Acked-by: Chander Kashyap <chander.kashyap@linaro.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-17exynos: Correct use of 64-bit divisionSimon Glass
The current code is causing errors like this on my toolchains: /usr/x86_64-pc-linux-gnu/armv7a-cros-linux-gnueabi/binutils-bin/2.22/ ld.bfd.real: failed to merge target specific data of file /usr/lib/gcc/ armv7a-cros-linux-gnueabi/4.7.x-google/libgcc.a(_divdi3.o) Use do_div() to avoid this. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-01Exynos: Tidy up the pwm_config function in the exynos pwm driverGabe Black
Some small fixes in the exynos pwm driver: 1. NS_IN_HZ is non-sensical since these are not compatible units. This constant actually describes the number of nanoseconds in a second. Renamed it to NS_IN_SEC. Also dropped the unnecessary parenthesis. 2. The variable "period" is not used to hold a period, it's used to hold a frequency. Renamed it to "frequency". 3. tcmp is an unsigned value, so (tcmp < 0) will never be true and the if which checks that condition will never execute. Also, there should be no problem if the pwm never switches, so there's no reason to subtract one from tcmp and therefore no reason to compare it against zero. Removed both ifs. If they weren't removed, tcmp should be a signed value. 4. Add a check for a 0 period. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Build and boot U-boot with this patch, backlight works properly. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-01Exynos: Avoid a divide by zero by specifying a non-zero period for pwm 4Gabe Black
The pwm_config function in the exynos pwm driver divides by its period period parameter. A function was calling pwm_config with a 0ns period and a 0ns duty cycle. That doesn't actually make any sense physically, and results in a divide by zero in the driver. This change changes the parameters to be a 100000ns period and duty cycle. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Build and boot U-boot with this patch, backlight works properly. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-01Exynos: pwm: Fix two bugs in the exynos pwm configuration codeGabe Black
First, the "div" value was being used incorrectly to compute the frequency of the PWM timer. The value passed in is a constant which reflects the value that would be found in a configuration register, 0 to 4. That should correspond to a scaling factor of 1, 2, 4, 8, or 16, 1 << div, but div + 1 was being used instead. Second, the reset value of the timers were being calculated to give an overall frequency, thrown out, and set to a maximum value. This was done so that PWM 4 could be used as the system clock by counting down from a high value, but it was applied indiscriminantly. It should at most be applied only to PWM 4. This change also takes the opportunity to tidy up the pwm_init function. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Build and boot U-boot with this patch, backlight works properly. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-01Exynos: Add timer_get_us functionChe-Liang Chiou
timer_get_us returns the time in microseconds since a certain reference point of history. However, it does not guarantee to return an accurate time after a long period; instead, it wraps around (that is, the reference point is reset to some other point of history) after some periods. The frequency of wrapping around is about an hour (or 2^32 microseconds). Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-04-01Exynos: Change get_timer() to work correctlySimon Glass
At present get_timer() does not return sane values. It should count up smoothly in milliscond intervals. We can change the PWM to count down at 1MHz, providing a resolution of 1us and a range of about an hour between required get_timer() calls. Test with command "sf probe 1:0; time sf read 40008000 0 1000". Try with different numbers of bytes and see that sane values are obtained Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-02-01arm: Move lastinc to arch_global_dataSimon Glass
Move this field into arch_global_data and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-02-01arm: Move tbl to arch_global_dataSimon Glass
Move this field into arch_global_data and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org>
2012-11-15dm: wdt: Move s5p watchdog timer to drivers/watchdog/Marek Vasut
Signed-off-by: Marek Vasut <marex@denx.de> Cc: David Müller <d.mueller@elsoft.ch> Cc: Wolfgang Denk <wd@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: U-Boot DM <u-boot-dm@lists.denx.de> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-09-01arm/s5pxx: Fix get_timer_masked to get the time.Zhong Hongbo
In general, The get_timer_masked function get the system time, no the number of ticks. Such as the nand_wait_ready will use get_timer_masked to delay the operations. And change the system time to adopt to the CONFIG_SYS_HZ. Signed-off-by: Hongbo Zhong <bocui107@gmail.com> Tested-by: Jaehoon Chung<jh80.chung@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-07-07Exynos: fix cpuinfo and cpu detectingMinkyu Kang
Since Exynos architecture have new SoCs, need to fix cpuinfo correctly. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Jaehoon Chung <jh80.chung@samsung.com> Cc: Chander Kashyap <chander.kashyap@linaro.org>
2012-02-12S5P: support generic watchdog timerMinkyu Kang
This patch adds support the generic watchdog timer for s5pc1xx and exynos4 Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: HeungJun, Kim <riverful.kim@samsung.com>
2011-11-16arch/arm/cpu/armv7/s5p-common/pwm.c: fix GCC 4.6 warningAnatolij Gustschin
Fix: pwm.c: In function 'pwm_config': pwm.c:85:16: warning: variable 'timer_rate_hz' set but not used [-Wunused-but-set-variable] Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-07-26Timer: Remove reset_timer() for non-Nios2 archesGraeme Russ
2011-07-26Timer: Remove set_timer completelyGraeme Russ
2011-05-26S5PC2XX: Support the cpu revisionMinkyu Kang
S5PC210 SoC have two cpu revisions, and have some difference. So, support the cpu revision for each revision. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2011-05-26S5P:SROM config code moved to s5p-common directoryChander Kashyap
SROM config code is made common for S5P series of boards. smdkc100.c now refers to s5p-common/sromc.c for SROM related subroutines. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2011-03-27S5P: timer: replace bss variable by gdMinkyu Kang
Use the global data instead of bss variable, replace as follow. count_value -> removed timestamp -> tbl lastdec -> lastinc Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Albert ARIBAUD <albert.aribaud@free.fr>
2011-03-27S5P: timer: Use pwm functionsMinkyu Kang
Use pwm functions for timer that is PWM timer 4. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2011-03-27ARM: S5P: pwm driver supportDonghwa Lee
This is common pwm driver of S5P. Signed-off-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2011-02-02armv7: s5pc1xx: don't use function pointer for clock functionsMinkyu Kang
Because of the bss area is cleared after relocation, we've lost pointers. This patch fixed it. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-11-30Merge branch 'master' of git://git.denx.de/u-boot-samsungWolfgang Denk
2010-11-30ARMV7: S5P: timer: get the count_value from register when call udelayMinkyu Kang
Because of count_value is set to tcnb4 register, should be get from this register when call udelay function. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2010-11-17Switch from archive libraries to partial linkingSebastien Carlier
Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-08-30ARMV7: S5P: separate the peripheral clocksMinkyu Kang
Because of peripheral devices can select clock sources, separate the peripheral clocks. (pwm, uart and so on) It just return the pclk at s5pc1xx SoC, but s5pc210 SoC must be calculated by own clock register setting. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-08-23ARMV7: S5P: rename from s5pc1xx to s5pMinkyu Kang
Because of these are common files around s5p Socs, rename from s5pc1xx to s5p. And getting cpu_id is SoC specific, so move to SoC's header file. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2010-08-23ARMV7: S5P: make s5p-common for sharing the code between s5pc1xx and s5pc2xxMinkyu Kang
This patch adds basic support for s5pc210. s5p-common will be used by all of s5p SoCs. Signed-off-by: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
generated by cgit (git 2.34.1) at 2024-12-28 04:36:06 +0000