linux.git/drivers/clk/zte, branch v4.11

clk: zte: add i2s clocks for zx296718

2017-02-10T17:17:38+00:00

The i2s related clock support is missing from the existing zx296718
clock driver. This patch adds it, so that the upstream ZX I2S driver
can work out.

Signed-off-by: Baoyou Xie 
Acked-by: Shawn Guo 
Signed-off-by: Stephen Boyd

clk: zte: add audio clocks for zx296718

2017-01-10T00:06:43+00:00

The audio related clock support is missing from the existing zx296718
clock driver.  Let's add it, so that the upstream ZX SPDIF driver can
work for HDMI audio support.

Signed-off-by: Jun Nie 
Signed-off-by: Shawn Guo 
[sboyd@codeaurora.org: Staticize some more structures]
Signed-off-by: Stephen Boyd

clk: zx296718: do not panic on failure

2017-01-10T00:06:42+00:00

Instead of using panic, we should give an error message and return error
code when of_clk_add_hw_provider() call fails.

Since we have error prompt for failures, the "init over" pr_info output
isn't really necessary but becomes a debug noise.  So let's clean it up
along the way.

Signed-off-by: Shawn Guo 
Signed-off-by: Stephen Boyd

clk: zx296718: register driver earlier with core_initcall

2016-09-23T21:42:13+00:00

Clock driver should be registered with an earlier initcall than
module_init which is used by most of client device drivers.  Otherwise,
probing of these client drivers will likely be deferred due to that
calls into clk API will return -EPROBE_DEFER.

Deferred probing is not a problem for most subsystems, but could bring
some side effect for particular subsystem, like display.  On ZX296718
platform, we get Linux logo and boot log lost from display device, just
because the DRM/KMS driver gets -EPROBE_DEFER from devm_clk_get() call.

Let's use core_initcall (qcom and a few other clk drivers use that) for
driver registration to avoid those unnecessary -EPROBE_DEFER and get rid
of the side effect with ZX296718 display system.

Signed-off-by: Shawn Guo 
Signed-off-by: Stephen Boyd

clk: zx: fix pointer case warnings

2016-09-16T23:18:19+00:00

The zx296718 clock driver has a creative way of assigning the register
values for each clock, by initializing an __iomem pointer to an
offset and then later adding the base (from ioremap) on top
with a cast to u64. This fail on all 32-bit architectures during
compile testing:

drivers/clk/zte/clk-zx296718.c: In function 'top_clocks_init':
drivers/clk/zte/clk-zx296718.c:554:35: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
   zx296718_pll_clk[i].reg_base += (u64)reg_base;
drivers/clk/zte/clk-zx296718.c:579:29: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
drivers/clk/zte/clk-zx296718.c:592:31: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]

It would be nice to avoid all the casts, but I decided to simply
shut up the warnings by changing the type from u64 to uintptr_t,
which does the right thing in practice.

Signed-off-by: Arnd Bergmann 
Fixes: ca0233285a93 ("clk: zx: register ZX296718 clocks")
Signed-off-by: Stephen Boyd

clk: zx296718: use builtin_platform_driver to simplify the code

2016-09-16T23:05:16+00:00

Use the builtin_platform_driver() macro to make the code simpler.

Signed-off-by: Wei Yongjun 
Signed-off-by: Stephen Boyd

clk: zx: register ZX296718 clocks

2016-09-14T20:50:33+00:00

The ZX296718 clocks are statically listed and registered. More
clock will be added later.

Signed-off-by: Jun Nie 
Signed-off-by: Stephen Boyd

clk: zx: reform pll config info to ease code extension

2016-09-14T20:48:32+00:00

Add power down bit and pll lock bit in pll config structure
to ease new SoC support.

Signed-off-by: Jun Nie 
Signed-off-by: Stephen Boyd

clk: zte: Remove CLK_IS_ROOT

2016-04-15T23:50:07+00:00

This flag is a no-op now. Remove usage of the flag.

Cc: Jun Nie 
Signed-off-by: Stephen Boyd

clk: zx: Constify parent names in clock init data

2015-07-28T18:59:39+00:00

The array of parent names can be made as array of const pointers to
const strings.

Signed-off-by: Jun Nie 
Signed-off-by: Stephen Boyd