diff options
author | Aamir Bohra <aamir.bohra@intel.com> | 2020-03-25 11:36:22 +0530 |
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committer | Subrata Banik <subrata.banik@intel.com> | 2020-03-28 14:08:04 +0000 |
commit | dd7acaad27e4f99f025df7f06d71dbb49d0e399b (patch) | |
tree | bee8d6993bdb992ef999de29df6303299dd4a04e /src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl | |
parent | 18fd26cb088560fe31c3a569eefe2638ed071fc9 (diff) |
soc/intel/jasperlake: Add Jasper Lake SoC support
This is a copy patch from Tiger Lake SoC code.
The only changes done on top of copy is changing below configs:
1. SOC_INTEL_TIGERLAKE -> SOC_INTEL_TIGERLAKE_COPY
2. SOC_INTEL_JASPERLAKE -> SOC_INTEL_JASPERLAKE_COPY
3. SOC_INTEL_TIGERLAKE_BASE -> SOC_INTEL_TIGERLAKE_BASE_COPY
We started with initial assumption that JSL and TGL can co-exist.
But now we see the SoC code in Tiger Lake is relying on too many
compile-time directives to make two SoCs co-exist. Some of the
differences are listed below:
-> Kconfig: Multiple Kconfig options using
if SOC_INTEL_{TIGERLAKE/JASPERLAKE}
-> GPIO: GPIO communities have their own differences.
This requires conditional checks in gpio.asl, gpio.c, gpio*.h,
pmc.h and gpio.asl
-> PCI IRQs: Set up differently for JSL and TGL
-> PCIe: Number of Root ports differ.
-> eMMC/SD: Only supported on JSL.
-> USB: Number of USB port are different for JSL and TGL.
-> Memory configuration parameters are different for JSL and TGL.
-> FSP parameters for JSL and TGL are different.
The split of JSL and TGL SoC code is planned as below:
1. Copy Tiger Lake SoC code as is, and change SoC Kconfig
to avoid conflicts with current mainboard builds.
2. Clean up TGL code out of copy patch done in step 1.
Make it JSL only code. The SoC config still kept as
SOC_INTEL_JASPERLAKE_COPY.
3. Change JSL SOC Kconfig from SOC_INTEL_JASPERLAKE_COPY to
SOC_INTEL_JASPERLAKE, dedede and jasperlake_rvp boards can
bind to SoC code from soc/intel/jasperlake. This step establishes
Jasper Lake as a separate SoC.
4. Clean up current JSL code from TGL code. This step establishes
Tiger Lake as a separate SoC.
BUG=b:150217037
Change-Id: I9c33f478a2f8ed5e2d8e7815821d13044d35d388
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Diffstat (limited to 'src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl')
-rw-r--r-- | src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl b/src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl new file mode 100644 index 0000000000..4f08cd78bd --- /dev/null +++ b/src/soc/intel/jasperlake/acpi/camera_clock_ctl.asl @@ -0,0 +1,76 @@ +/* + * This file is part of the coreboot project. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define R_ICLK_PCR_CAMERA1 0x8000 +#define B_ICLK_PCR_FREQUENCY 0x1 +#define B_ICLK_PCR_REQUEST 0x2 + +/* The clock control registers for each IMGCLK are offset by 0xC */ +#define B_ICLK_PCR_OFFSET 0xC + +Scope (\_SB.PCI0) { + + /* IsCLK PCH base register for clock settings */ + Name (ICKB, 0) + Store (PCRB (PID_ISCLK) + R_ICLK_PCR_CAMERA1, ICKB) + + /* + * Arg0 : Clock Number + * Return : Offset of register to control the clock in Arg0 + * + */ + Method (OFST, 0x1, NotSerialized) + { + Return (ICKB + (Arg0 * B_ICLK_PCR_OFFSET)) + } + + /* + * Helper function for Read And OR Write + * Arg0 : source and destination + * Arg1 : And data + * Arg2 : Or data + */ + Method (RAOW, 0x3, Serialized) + { + OperationRegion (ICLK, SystemMemory, OFST(Arg0), 4) + Field (ICLK, AnyAcc, NoLock, Preserve) + { + VAL0, 32 + } + Local0 = VAL0 + VAL0 = Local0 & Arg1 | Arg2 + } + + /* + * Clock control Method + * Arg0: Clock source select(0: IMGCLKOUT_0, 1: IMGCLKOUT_1, 2: IMGCLKOUT_2, 3: IMGCLKOUT_3, + * 4: IMGCLKOUT_4, 5: IMGCLKOUT_5) + * Arg1: Select 24MHz / 19.2 MHz (0: 24MHz, 1: 19.2MHz) + */ + Method (MCON, 0x2, NotSerialized) + { + /* Set Clock Frequency */ + RAOW (Arg0, ~B_ICLK_PCR_FREQUENCY, Arg1) + + /* Enable Clock */ + RAOW (Arg0, ~B_ICLK_PCR_REQUEST, B_ICLK_PCR_REQUEST) + } + + Method (MCOF, 0x1, NotSerialized) + { + /* Disable Clock */ + RAOW (Arg0, ~B_ICLK_PCR_REQUEST, 0) + } +} |