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The IMX8MN platform does not have any video processing unit (VPU), and
indeed in the reference manual (document IMX8MNRM Rev 2, 07/2022) there
is no occurrence of its pll. From an analysis of the code and the RM
itself, I think vpu pll is used instead of m7 alternate pll, probably
for copy and paste of code taken from modules of similar architectures.
As an example for all, if we consider the second row of the "Clock Root"
table of chapter 5 (Clocks and Power Management) of the RM:
Clock Root offset Source Select (CCM_TARGET_ROOTn[MUX])
... ... ...
ARM_M7_CLK_ROOT 0x8080 000 - 24M_REF_CLK
001 - SYSTEM_PLL2_DIV5
010 - SYSTEM_PLL2_DIV4
011 - M7_ALT_PLL_CLK
100 - SYSTEM_PLL1_CLK
101 - AUDIO_PLL1_CLK
110 - VIDEO_PLL_CLK
111 - SYSTEM_PLL3_CLK
... ... ...
but in the source code, the imx8mn_m7_sels clocks list contains vpu_pll
for the source select bits 011b.
So, let's rename "vpu_pll" to "m7_alt_pll" to be consistent with the RM.
The IMX8MN_VPU_* constants have not been removed to ensure backward
compatibility of the patch.
No functional changes intended.
Fixes: 96d6392b54 ("clk: imx: Add support for i.MX8MN clock driver")
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Acked-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20221117113637.1978703-2-dario.binacchi@amarulasolutions.com
clkout1 and clkout2 allow to supply clocks from the SoC to the board,
which is used by some board designs to provide reference clocks.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Pull clk updates from Stephen Boyd:
"There's not much to see in the core framework this time around.
Instead the majority of the diff is the normal collection of driver
additions for new SoCs and non-critical clk data fixes and updates.
The framework must be middle aged.
The two biggest directories in the diffstat show that the Qualcomm and
Unisoc support added a handful of big drivers for new SoCs but that's
not really the whole story because those new drivers tend to add large
numbers of lines of clk data. There's a handful of AT91 clk drivers
added this time around too and a bunch of improvements to drivers like
the i.MX driver. All around lots of updates and fixes in various clk
drivers which is good to see.
The core framework has only one real major change which has been
baking in next for the past couple months. It fixes the framework so
that it stops caching a clk's phase when the phase clk_op returns an
error. Before this change we would consider some negative errno as a
phase and that just doesn't make sense.
Core:
- Don't show clk phase when it is invalid
New Drivers:
- Add support for Unisoc SC9863A clks
- Qualcomm SM8250 RPMh and MSM8976 RPM clks
- Qualcomm SM8250 Global Clock Controller (GCC) support
- Qualcomm SC7180 Modem Clock Controller (MSS CC) support
- EHRPWM's TimeBase clock(TBCLK) for TI AM654 SoCs
- Support PMC clks on at91sam9n12, at91rm9200, sama5d3, and
at91sam9g45 SoCs
Updates:
- GPU GX GDSC support on Qualcomm sc7180
- Fixes and improvements for the Marvell MMP2/MMP3 SoC clk drivers
- A series from Anson to convert i.MX8 clock bindings to json-schema
- Update i.MX pll14xx driver to include new frequency entries for
pll1443x table, and return error for invalid PLL type
- Add missing of_node_put() call for a number of i.MX clock drivers
- Drop flag CLK_IS_CRITICAL from 'A53_CORE' mux clock, as we already
have the flag on its child cpu clock
- Fix a53 cpu clock for i.MX8 drivers to get it source from ARM PLL
via CORE_SEL slice, and source from A53 CCM clk root when we need
to change ARM PLL frequency. Thus, we can support core running
above 1GHz safely
- Update i.MX pfdv2 driver to check zero rate and use determine_rate
for getting the best rate
- Add CLKO2 for imx8mm, SNVS clock for imx8mn, and PXP clock for
imx7d
- Remove PMC clks from Tegra clk driver
- Improved clock/reset handling for the Renesas R-Car USB2 Clock
Selector
- Conversion to json-schema of the Renesas CPG/MSSR DT bindings
- Add Crypto clocks on Renesas R-Car M3-W/W+, M3-N, E3, and D3
- Add RPC (QSPI/HyperFLASH) clocks on Renesas R-Car H3, M3-W/W+, and
M3-N
- Update Amlogic audio clock gate hierarchy for meson8 and gxbb
- Update Amlogic g12a spicc clock sources
- Support for Ingenic X1000 TCU clks"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (146 commits)
clk: sprd: fix to get a correct ibias of pll
dt-bindings: imx8mm-clock: Fix the file path
dt-bindings: imx8mq-clock: Fix the file path
clk: qcom: rpmh: Drop unnecessary semicolons
clk: qcom: rpmh: Simplify clk_rpmh_bcm_send_cmd()
clk: tegra: Use NULL for pointer initialization
clk: sprd: add clocks support for SC9863A
clk: sprd: support to get regmap from parent node
clk: sprd: Add macros for referencing parents without strings
clk: sprd: Add dt-bindings include file for SC9863A
dt-bindings: clk: sprd: add bindings for sc9863a clock controller
dt-bindings: clk: sprd: rename the common file name sprd.txt to SoC specific
clk: sprd: add gate for pll clocks
MAINTAINERS: dt: update reference for arm-integrator.txt
clk: mmp2: Fix bit masks for LCDC I/O and pixel clocks
clk: mmp2: Add clock for fifth SD HCI on MMP3
dt-bindings: marvell,mmp2: Add clock id for the fifth SD HCI on MMP3
clk: mmp2: Add clocks for the thermal sensors
dt-bindings: marvell,mmp2: Add clock ids for the thermal sensors
clk: mmp2: add the GPU clocks
...
Pull ARM devicetree updates from Arnd Bergmann:
"Most of the commits are for additional hardware support and minor
fixes for existing machines for all the usual platforms: qcom,
amlogic, at91, gemini, mediatek, ti, socfpga, i.mx, layerscape,
uniphier, rockchip, exynos, ux500, mvebu, tegra, stm32, renesas,
sunxi, broadcom, omap, and versatile.
The conversion of binding files to machine-readable yaml format
continues, along with fixes found during the validation. Andre
Przywara takes over maintainership for the old Calxeda Highbank
platform and provides a number of updates.
The OMAP2+ platforms see a continued move from platform data into dts
files, for many devices that relied on a mix of auxiliary data in
addition to the DT description
A moderate number of new SoCs and machines are added, here is a full
list:
- Two new Qualcomm SoCs with their evaluation boards: Snapdragon 865
(SM8250) is the current high-end phone chip, and IPQ6018 is a new
WiFi-6 router chip.
- Mediatek MT8516 application processor SoC for voice assistants,
along with the "pumpkin" development board
- NXP i.MX8M Plus SoC, a variant of the popular i.MX8M, along with an
evaluation board.
- Kontron "sl28" board family based on NXP LS1028A
- Eleven variations of the new i.MX6 TechNexion Pico board, combining
the "dwarf", "hobbit", "nymph" and "pi" baseboards with i.MX6/i.MX7
SoM carriers
- Three additional variants of the Toradex Colibri board family, all
based on versions of the NXP i.MX7.
- The Pinebook Pro laptop based on Rockchip RK3399
- Samsung S7710 Galaxy Xcover 2, a 2013 vintage Android phone based
on the ST-Ericsson u8500 platform
- DH Electronics DHCOM SoM and PDK2 rev. 400 carrier based on
STMicroelectronics stm32mp157
- Renesas M3ULCB starter kit for R-Car M3-W+
- Hoperun HiHope development board with Renesas RZ/G2M
- Pine64 PineTab tablet and PinePhone phone, both based on Allwinner
A64
- Linutronix Testbox v2 for the Lamobo R1 router, based on Allwinner
A20
- PocketBook Touch Lux 3 ebook reader, based on Allwinner A13"
* tag 'arm-dt-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (520 commits)
ARM: dts: ux500: Fix missing node renames
arm64: dts: Revert "specify console via command line"
MAINTAINERS: Update Calxeda Highbank maintainership
arm: dts: calxeda: Group port-phys and sgpio-gpio items
arm: dts: calxeda: Fix interrupt grouping
arm: dts: calxeda: Provide UART clock
arm: dts: calxeda: Basic DT file fixes
arm64: dts: specify console via command line
ARM: dts: at91: sama5d27_wlsom1_ek: add USB device node
ARM: dts: gemini: Add thermal zone to DIR-685
ARM: dts: gemini: Rename IDE nodes
ARM: socfpga: arria10: Add ptp_ref clock to ethernet nodes
arm64: dts: ti: k3-j721e-mcu: add scm node and phy-gmii-sel nodes
arm64: dts: ti: k3-am65-mcu: add phy-gmii-sel node
arm64: dts: ti: k3-am65-mcu: Add DMA entries for ADC
arm64: dts: ti: k3-am65-main: Add DMA entries for main_spi0
arm64: dts: ti: k3-j721e-mcu-wakeup: Add DMA entries for ADC
arm64: dts: ti: k3-am65: Add clocks to dwc3 nodes
arm64: dts: meson-g12b-odroid-n2: add SPIFC controller node
arm64: dts: khadas-vim3: add SPIFC controller node
...
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root
signoff timing is 1Ghz, however the A53 core which sources from CCM
root could run above 1GHz which voilates the CCM.
There is a CORE_SEL slice before A53 core, we need configure the
CORE_SEL slice source from ARM PLL, not A53 CCM clk root.
The A53 CCM clk root should only be used when need to change ARM PLL
frequency.
Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out.
Configure a53 ccm root sources from 800MHz sys pll
Configure a53 core sources from arm_pll_out
Mark arm_a53_core as critical clk.
Fixes: 96d6392b54 ("clk: imx: Add support for i.MX8MN clock driver")
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Use imx8m_clk_hw_composite_core to simplify code.
Add new definitions, and X_SRC/CG/DIV will be alias to the new
definitions for backwards compatibility
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
On imx8mn there are 9 fixed-factor dividers for SYS_PLL1 and SYS_PLL2
each with their own gate. Only one of these gates (the one "dividing" by
one) is currently defined and it's incorrectly set as the parent of all
the fixed-factor dividers.
Add the other 8 gates to the clock tree between sys_pll1/2_bypass and
the fixed dividers.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This is enabled by default but if it's not explicitly defined and marked
as critical then its parent might get turned off.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
