Commit Graph

19 Commits

Author SHA1 Message Date
Stephen Boyd
1f79131bfd clk: qcom: Add IPQ806X's HFPLLs
Describe the HFPLLs present on IPQ806X devices.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-10-17 13:14:47 -07:00
Jerome Brunet
04cdd5af51 clk: qcom: drop CLK_SET_RATE_GATE from sdc clocks
the mmci driver (drivers/mmc/host/mmci.c) does the following sequence:
* clk_prepare_enable()
* clk_set_rate()

on SDCx_clk which is a children of SDCx_src. SDCx_src has
CLK_SET_RATE_GATE so this sequence should not be allowed but this was not
enforced. IOW, the flag is ignored. Dropping the flag won't change
anything to the current behaviour of the platform.

CLK_SET_RATE_GATE is being fixed and enforced now. If the flag was kept,
the mmci driver would receive -EBUSY when calling clk_set_rate()

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20180619134051.16726-2-jbrunet@baylibre.com
2018-06-19 10:02:28 -07:00
Stephen Boyd
cbf2e548ca clk: qcom: ipq806x: Fix board clk rates
The clocks on these boards run at 25 MHz, not 19.2 and 27 like
other platforms. Unfortunately I copy/pasted from other similar
SoCs but forgot this one is different. Fix it.

Fixes: a085f877a8 ("clk: qcom: Move cxo/pxo/xo into dt files")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-09 17:10:32 -08:00
Stephen Boyd
81925c5eaa clk: qcom: Remove CLK_IS_ROOT
This flag is a no-op now. Remove usage of the flag.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-03-04 12:53:53 -08:00
Stephen Boyd
c430daf951 Revert "clk: qcom: Specify LE device endianness"
This reverts commit 329cabcecf.

The commit that caused us to specify LE device endianness here,
29bb45f25f (regmap-mmio: Use native endianness for read/write,
2015-10-29), has been reverted in mainline so now when we specify
LE it actively breaks big endian kernels because the byte
swapping in regmap-mmio is incorrect. Let's revert this change
because it will 1) fix the big endian kernels and 2) be redundant
to specify LE because that will become the default soon.

Cc: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-02-12 14:24:24 -08:00
Stephen Boyd
329cabcecf clk: qcom: Specify LE device endianness
All these clock controllers are little endian devices, but so far
we've been relying on the regmap mmio bus handling this for us
without explicitly stating that fact. After commit 4a98da2164cf
(regmap-mmio: Use native endianness for read/write, 2015-10-29),
the regmap mmio bus will read/write with the __raw_*() IO
accessors, instead of using the readl/writel() APIs that do
proper byte swapping for little endian devices.

So if we're running on a big endian processor and haven't
specified the endianness explicitly in the regmap config or in
DT, we're going to switch from doing little endian byte swapping
to big endian accesses without byte swapping, leading to some
confusing results. On my apq8074 dragonboard, this causes the
device to fail to boot as we access the clock controller with
big endian IO accesses even though the device is little endian.

Specify the endianness explicitly so that the regmap core
properly byte swaps the accesses for us.

Reported-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-20 13:14:43 -08:00
Stephen Boyd
a085f877a8 clk: qcom: Move cxo/pxo/xo into dt files
Put these clocks into the dt files instead of registering them
from C code. This provides a few benefits. It allows us to
specify the frequency of these clocks at the board level instead
of hard-coding them in the driver. It allows us to insert an RPM
clock in between the consumers of the crystals and the actual
clock. And finally, it helps us transition the GCC driver to use
RPM clocks when that configuration is enabled.

Cc: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-16 11:07:06 -08:00
Stephen Boyd
9bc432cb24 clk: qcom: Drop calls to qcom_cc_remove()
Now that qcom_cc_remove() is a nop, drop calls to
qcom_cc_remove() and any empty driver remove functions.

Cc: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-08 23:53:01 -07:00
Georgi Djakov
adb11a40a3 clk: qcom: Constify the parent names arrays
Make const both the array and the strings, so they can be
moved to .rodata section.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-07-06 17:20:59 -07:00
Stephen Boyd
f7b81d67d0 clk: qcom: Add support for NSS/GMAC clocks and resets
Add the NSS/GMAC clocks and the TCM clock and NSS resets.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-30 17:04:36 -07:00
Archit Taneja
4c385b25fa clk: qcom: Add EBI2 clocks for IPQ806x
The NAND controller within EBI2 requires EBI2_CLK and
EBI2_ALWAYS_ON_CLK clocks.  Create structs for these clocks so
that they can be used by the NAND controller driver. Add an entry
for EBI2_AON_CLK in the gcc-ipq806x DT binding document.

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-04-06 14:07:49 -07:00
Georgi Djakov
293d2e97b3 clk: qcom: Introduce parent_map tables
In the current parent mapping code, we can get duplicate or inconsistent
indexes, which leads to discrepancy between the number of elements in the
array and the number of parents. Until now, this was solved with some
reordering but this is not always possible.

This patch introduces index tables that are used to define the relations
between the PLL source and the hardware mux configuration value.
To accomplish this, here we do the following:
 - Define a parent_map struct to map the relations between PLL source index
 and register configuration value.
 - Add a qcom_find_src_index() function for finding the index of a clock
 matching the specific PLL configuration.
 - Update the {set,get}_parent RCG functions use the newly introduced
 parent_map struct.
 - Convert all existing drivers to the new parent_map tables.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-03-23 16:09:19 -07:00
Stephen Boyd
0bf0ff82c3 clk: qcom: Fix i2c frequency table
PXO is 25MHz, not 27MHz. Fix the table.

Fixes: 24d8fba44a "clk: qcom: Add support for IPQ8064's global
clock controller (GCC)"

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Andy Gross <agross@codeaurora.org>
Tested-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-03-12 12:18:55 -07:00
Rajendra Nayak
c99e515a92 clk: qcom: Add IPQ806X LPASS clock controller (LCC) driver
Add an LCC driver for IPQ806x that supports the i2s, S/PDIF, and
pcm clocks.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
[sboyd@codeaurora.org: Reworded commit text, added Kconfig
select, fleshed out Kconfig description a bit more, added pll4
configuration and reworked probe for it, added muxes, split out
dt-binding file]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-01-27 11:49:19 -08:00
Wolfram Sang
1f46c71d6e clk: qcom: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:20:22 +02:00
Mike Turquette
db0bcc33a8 qcom clock changes for 3.18
Some fixes for the IPQ driver and some code consolidation
 and refactoring.
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Merge tag 'qcom-clocks-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into clk-next

qcom clock changes for 3.18

Some fixes for the IPQ driver and some code consolidation
and refactoring.
2014-09-26 16:10:57 -07:00
Andy Gross
dc1b3f657f clk: qcom: Add IPQ8064 PLL required for USB
This patch adds the PLL0 that is required for the USB clocks to
work properly.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Fixes: 24d8fba44a "clk: qcom: Add support for IPQ8064's global clock controller (GCC)"
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2014-09-22 15:16:52 -07:00
Stephen Boyd
d8210e28e5 clk: qcom: Fix sdc 144kHz frequency entry
The pre-divider for the sdc clocks only has 2 bits in it, so we
can't possibly divide by anything larger than 4 here.
Furthermore, we program the value of ~(n - m) and the n value is
larger than 8 bits (max of 256). Replace this entry with 200kHz
which is close enough to 144kHz to be usable.

Cc: Kumar Gala <galak@codeaurora.org>
Cc: Andy Gross <agross@codeaurora.org>
Fixes: 24d8fba44a "clk: qcom: Add support for IPQ8064's global clock controller (GCC)"
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-09-02 16:52:28 -07:00
Kumar Gala
24d8fba44a clk: qcom: Add support for IPQ8064's global clock controller (GCC)
Add a driver for the global clock controller found on IPQ8064 based
platforms. This should allow most non-multimedia device drivers to probe
and control their clocks.

This is currently missing clocks for USB HSIC and networking devices.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2014-07-15 16:38:58 -07:00