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remarkable-linux/drivers/clk
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Sébastien Szymanski de0bbe07a4 clk: imx6: refine hdmi_isfr's parent to make HDMI work on i.MX6 SoCs w/o VPU 
[ Upstream commit c68ee58d9e ]

On i.MX6 SoCs without VPU (in my case MCIMX6D4AVT10AC), the hdmi driver
fails to probe:

[    2.540030] dwhdmi-imx 120000.hdmi: Unsupported HDMI controller
(0000:00:00)
[    2.548199] imx-drm display-subsystem: failed to bind 120000.hdmi
(ops dw_hdmi_imx_ops): -19
[    2.557403] imx-drm display-subsystem: master bind failed: -19

That's because hdmi_isfr's parent, video_27m, is not correctly ungated.
As explained in commit 5ccc248cc5 ("ARM: imx6q: clk: Add support for
mipi_core_cfg clock as a shared clock gate"), video_27m is gated by
CCM_CCGR3[CG8].

On i.MX6 SoCs with VPU, the hdmi is working thanks to the
CCM_CMEOR[mod_en_ov_vpu] bit which makes the video_27m ungated whatever
is in CCM_CCGR3[CG8]. The issue can be reproduced by setting
CCMEOR[mod_en_ov_vpu] to 0.

Make the HDMI work in every case by setting hdmi_isfr's parent to
mipi_core_cfg.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-20 10:10:27 +01:00
..
at91 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
axis
axs10x clk: axs10x: introduce AXS10X pll driver 2017-07-17 11:50:59 -07:00
bcm License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
berlin clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
h8300 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hisilicon clk: hi3660: fix incorrect uart3 clock freqency 2017-12-14 09:53:12 +01:00
imgtec Update MIPS email addresses 2017-11-03 09:02:30 -07:00
imx clk: imx6: refine hdmi_isfr's parent to make HDMI work on i.MX6 SoCs w/o VPU 2017-12-20 10:10:27 +01:00
ingenic Update MIPS email addresses 2017-11-03 09:02:30 -07:00
keystone clk: keystone: sci-clk: Fix sci_clk_get 2017-08-02 18:37:26 -07:00
loongson1
mediatek clk: mediatek: add the option for determining PLL source clock 2017-12-20 10:10:27 +01:00
meson Amlogic clock driver updates for 4.14 2017-08-23 15:28:52 -07:00
microchip
mmp License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mvebu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mxs
nxp clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled() 2017-08-31 18:35:44 -07:00
pistachio
pxa
qcom clk: qcom: common: fix legacy board-clock registration 2017-12-14 09:53:12 +01:00
renesas License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rockchip License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
samsung License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sirf License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
socfpga License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spear License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
st License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sunxi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sunxi-ng clk: sunxi-ng: a83t: Fix i2c buses bits 2017-12-14 09:53:12 +01:00
tegra License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ti clk: ti: dra7-atl-clock: fix child-node lookups 2017-11-30 08:40:54 +00:00
uniphier clk: uniphier: fix DAPLL2 clock rate of Pro5 2017-12-14 09:53:12 +01:00
ux500 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
versatile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86 clk: x86: Do not gate clocks enabled by the firmware 2017-07-18 16:23:13 -07:00
zte clk: zte: constify clk_div_table 2017-08-30 22:30:30 -07:00
zynq
clk-asm9260.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-axi-clkgen.c
clk-axm5516.c
clk-bulk.c clk: Export clk_bulk_prepare() 2017-09-29 14:17:17 -07:00
clk-cdce706.c
clk-cdce925.c
clk-clps711x.c
clk-composite.c
clk-conf.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-cs2000-cp.c clk: cs2000: Add cs2000_set_saved_rate 2017-08-31 11:32:32 -07:00
clk-devres.c clk: add managed version of clk_bulk_get 2017-06-02 15:37:49 -07:00
clk-divider.c clk: Don't write error code into divider register 2017-08-31 18:43:38 -07:00
clk-efm32gg.c
clk-fixed-factor.c
clk-fixed-rate.c
clk-fractional-divider.c clk: fractional-divider: allow overriding of approximation 2017-08-08 17:39:48 +02:00
clk-gate.c clk: gate: expose clk_gate_ops::is_enabled 2017-08-31 18:35:45 -07:00
clk-gemini.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
clk-gpio.c
clk-hi655x.c
clk-highbank.c
clk-hsdk-pll.c ARC: clk: introduce HSDK pll driver 2017-08-30 22:36:05 -07:00
clk-max77686.c
clk-moxart.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-multiplier.c
clk-mux.c
clk-nomadik.c
clk-nspire.c
clk-oxnas.c
clk-palmas.c clk: palmas: undo preparation of a clock source. 2017-06-02 10:51:34 -07:00
clk-pwm.c
clk-qoriq.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-rk808.c
clk-s2mps11.c
clk-scpi.c clk: scpi: error when clock fails to register 2017-06-29 18:47:35 -07:00
clk-si514.c
clk-si570.c
clk-si5351.c clk: si5351: fix PLL reset 2017-09-01 16:00:54 -07:00
clk-si5351.h
clk-stm32f4.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-stm32h7.c clk: stm32h7: fix test of clock config 2017-12-14 09:53:11 +01:00
clk-tango4.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
clk-twl6040.c
clk-u300.c
clk-versaclock5.c clk: vc5: Add support for IDT VersaClock 5P49V5925 2017-07-17 11:51:00 -07:00
clk-vt8500.c
clk-wm831x.c
clk-xgene.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk.h
clkdev.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
Kconfig clk: Kconfig: Name RK805 in Kconfig for COMMON_CLK_RK808 2017-08-31 16:20:12 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00