The LCDIF interrupt should be triggered by the rising edge of the
IRQ line because we only want the interrupt to trigger once per each
frame. It seems the LCDIF IRQ line cannot be explicitly de-asserted
by software, so the previous behavior before this patch, where the
interrupt was triggered by level-high status of the IRQ line, caused
the interrupt to fire again immediatelly after it was handled, which
caused the system to lock up due to the high rate of interrupts.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
I2C3 bus was only brought out in revision A1 of the board and revision
B1 only brings out 3 I2C busses (I2C0, I2C1 and I2C2).
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Fixed no space before tabs warnings in respetcive imx6qdl dtsi files.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
If of_genpd_add_provider_onecell() fails the following kernel crash is
observed on a kernel built with multi_v7_defconfig:
[ 1.739301] [00000040] *pgd=00000000
[ 1.739310] Internal error: Oops: 5 [#1] SMP ARM
[ 1.739319] Modules linked in:
[ 1.739328] CPU: 1 PID: 95 Comm: kworker/1:4 Not tainted 4.8.0-11897-g6b5e09a #1
[ 1.739331] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[ 1.739352] Workqueue: pm genpd_power_off_work_fn
[ 1.739356] task: ee63d400 task.stack: ee70a000
[ 1.739365] PC is at mutex_lock+0xc/0x4c
[ 1.739374] LR is at regulator_disable+0x2c/0x60
[ 1.739379] pc : [<c0bc0da0>] lr : [<c06e4b10>] psr: 60000013
[ 1.739379] sp : ee70beb0 ip : 10624dd3 fp : ee6e6280
[ 1.739382] r10: eefb0900 r9 : 00000000 r8 : c1309918
[ 1.739385] r7 : 00000000 r6 : 00000040 r5 : 00000000 r4 : 00000040
[ 1.739390] r3 : 0000004c r2 : 7fffd540 r1 : 000001e4 r0 : 00000040
Instead of returning of_genpd_add_provider_onecell() directly,
we should check its return value and in the case of error we
should unwind the previously taken actions, which in these case are:
- Call imx6q_pm_pu_power_off()
- Set imx6q_pu_domain.reg back to NULL
Setting imx6q_pu_domain.reg to NULL in the error case is important
as it will prevent further operations in the pu_reg regulator.
This kernel crash is not observed with imx_v6_v7_defconfig because
it selects GPU and VPU drivers, which are consumers of the GPC block
and thus change the refcount of the pu_reg regulator.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Since commit 0159ec6707 ("PM / Domains: Verify the PM domain is present
when adding a provider") the following regression is observed on imx6:
imx-gpc: probe of 20dc000.gpc failed with error -22
The gpc probe fails because of_genpd_add_provider_onecell() now checks
if all the domains are initialized via pm_genpd_present() function
and it fails because not all the power domains are initialized.
In order to fix this error, initialize all the power domains from
imx_gpc_domains[], not only the imx6q_pu_domain.base one.
Reported-by: Olof's autobooter <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
MMDC is a multi-mode DDR controller that supports DDR3/DDR3L x16/x32/x64
and LPDDR2 two channel x16/x32 memory types. MMDC is configurable, high
performance, and optimized. MMDC is present on i.MX6 Quad and i.MX6
QuadPlus devices, but this driver only supports i.MX6 Quad at the moment.
MMDC provides registers for performance counters which read via this
driver to help debug memory throughput and similar issues.
$ perf stat -a -e mmdc/busy-cycles/,mmdc/read-accesses/,mmdc/read-bytes/,mmdc/total-cycles/,mmdc/write-accesses/,mmdc/write-bytes/ dd if=/dev/zero of=/dev/null bs=1M count=5000
Performance counter stats for 'dd if=/dev/zero of=/dev/null bs=1M count=5000':
898021787 mmdc/busy-cycles/
14819600 mmdc/read-accesses/
471.30 MB mmdc/read-bytes/
2815419216 mmdc/total-cycles/
13367354 mmdc/write-accesses/
427.76 MB mmdc/write-bytes/
5.334757334 seconds time elapsed
Signed-off-by: Zhengyu Shen <zhengyu.shen@nxp.com>
Signed-off-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Calibrate the USB PHY TX settings to pass the eye diagram signal
integrity test. The settings are taken from the i.MX6 reference
manual's recommended configuration for USB certification (66.2.6).
Signed-off-by: Jaret Cantu <jaret.cantu@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The UniPhier reset driver (drivers/reset/reset-uniphier.c) has been
merged. Select ARCH_HAS_RESET_CONTROLLER from the SoC Kconfig.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Use definition in rockchip pinctrl header to describe
gpios, this will make it more clear.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
When used with a compiler that doesn't implement "asm goto"
(such as the AArch64 port of GCC 4.8), jump labels generate a
memory access to find out about the value of the key (instead
of just patching the code). The key itself is likely to be
stored in the BSS.
This is perfectly fine, except that we don't map the BSS at HYP,
leading to an exploding kernel at the first access. The obvious
fix is simply to map the BSS there (which should have been done
a long while ago, but hey...).
Reported-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
MK808 is a tv stick which has rockchip rk3066 CPU inside, two usb ports
- host and otg, micro sd card slot and onboard wifi RK901.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chip.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
STiH415/6 SoC support is being removed from the kernel and
was the only platform using this Kconfig symbol
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Initialize PLL, cpu bus and peripherial bus rate while kernel init.
No other module does than.
This gives us performance boost observable for example in mmc transfers.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The AES key schedule generation is mostly endian agnostic, with the
exception of the rotation and the incorporation of the round constant
at the start of each round. So implement a big endian specific version
of that part to make the whole routine big endian compatible.
Fixes: 86464859cc ("crypto: arm - AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove pullup on dbgu DTXD signal, it is a push-pull output thus the
pullup is pointless.
Add pullup on dbgu DRXD signal, it prevents the DRXD signal to be left
floating and so consuming a useless extra amount of power in crowbarred
state if nothing is externally connected to dbgu.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Once the ST frontend demux HW IP has been enabled, the clock can't
be disabled otherwise the system will hang and the board will
be unserviceable.
To allow balanced clock enable/disable calls in the driver we use
the critical clock infrastructure to take an extra reference on the
clock so the clock will never actually be disabled.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
sti-hdmi is already enabled in stih410.dtsi.
So no need to declare it here.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Cleaning of some uni-players and uni-reader fields.
Associated configurations are now handled in driver based
on compatible string.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
