diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-22 09:45:23 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-22 09:45:23 -0800 |
commit | 28b9aaac4cc5a11485b6f70656e4e9ead590cf5b (patch) | |
tree | 5bbd59f7da70f315eb39e19c7c2526bec5d618ea /drivers/soc | |
parent | 5d26c176d58bc3f9380b18ba2f51a1d863c6a5a0 (diff) | |
parent | 4d5c4ae32945ac86cf68740a2236205b333d5a66 (diff) | |
download | linux-28b9aaac4cc5a11485b6f70656e4e9ead590cf5b.tar.bz2 |
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"This is all driver updates, the majority of which is a bunch of new
Qualcomm clk drivers that dominate the diffstat because we add support
for six SoCs from that particular vendor.
The other big change is the removal of various clk drivers that are no
longer used now that the kernel is dropping support for those SoCs.
Beyond that there's the usual non-critical fixes for existing drivers
and a good number of patches from Lee Jones that cleanup a bunch of
W=1 enabled builds.
Removed Drivers:
- Remove efm32 clk driver
- Remove tango4 clk driver
- Remove zte zx clk driver
- Remove sirf prima2/atlast clk drivers
- Remove u300 clk driver
New Drivers:
- PLL support on MStar/SigmaStar ARMv7 SoCs
- CPU clks for Qualcomm SDX55
- GCC and RPMh clks for Qualcomm SC8180x and SC7280 SoCs
- GCC clks for Qualcomm SM8350
- GPU clks for Qualcomm SDM660/SDM630
Updates:
- Video clk fixups on Qualcomm SM8250
- Improvements for multimedia clks on Qualcomm MSM8998
- Fix many warnings with W=1 enabled builds under drivers/clk/
- Support crystal load capacitance for Versaclock VC5
- Add a "skip recall" DT binding for Silicon Labs' si570 to avoid
glitches at boot
- Convert Xilinx VCU clk driver to a proper clk provider driver
- Expose Xilinx ZynqMP clk driver to more platforms
- Amlogic pll driver fixup
- Amlogic meson8b clock controller dt support clean up
- Remove mipi clk from the Amlogic axg clock controller
- New Rockchip rk3368 clock ids related to camera input
- Use pr_notice() instead of pr_warn() on i.MX6Q pre-boot ldb_di_clk
reparenting
- A series from Liu Ying that adds some SCU clocks support for
i.MX8qxp DC0/MIPI-LVDS subsystems
- A series from Lucas Stach that adds PLL monitor clocks for i.MX8MQ,
and clkout1/2 support for i.MX8MM/MN
- Add I2c and Ethernet (RAVB) clocks on Renesas R-Car V3U
- Add timer (TMU) clocks on most Renesas R-Car Gen3 SoCs
- Add video-related (FCPVD/VSPD/VSPX), watchdog (RWDT), serial
(HSCIF), pincontrol/GPIO (PFC/GPIO), SPI (MSIOF), SDHI, and DMA
(SYS-DMAC) clocks on Renesas R-Car V3U
- Add support for the USB 2.0 clock selector on Renesas RZ/G2 SoCs
- Allwinner H616 SoC clk support"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (171 commits)
clk: mstar: msc313-mpll: Fix format specifier
clk: mstar: Allow MStar clk drivers to be compile tested
clk: qoriq: use macros to generate pll_mask
clk: qcom: Add Global Clock controller (GCC) driver for SC7280
dt-bindings: clock: Add SC7280 GCC clock binding
clk: qcom: rpmh: Add support for RPMH clocks on SC7280
dt-bindings: clock: Add RPMHCC bindings for SC7280
clk: qcom: gcc-sm8350: add gdsc
dt-bindings: clock: Add QCOM SDM630 and SDM660 graphics clock bindings
clk: qcom: Add SDM660 GPU Clock Controller (GPUCC) driver
clk: qcom: mmcc-msm8996: Migrate gfx3d clock to clk_rcg2_gfx3d
clk: qcom: rcg2: Stop hardcoding gfx3d pingpong parent numbers
dt-bindings: clock: Add support for the SDM630 and SDM660 mmcc
clk: qcom: Add SDM660 Multimedia Clock Controller (MMCC) driver
clk: qcom: gcc-sdm660: Mark GPU CFG AHB clock as critical
clk: qcom: gcc-sdm660: Mark MMSS NoC CFG AHB clock as critical
clk: qcom: gpucc-msm8998: Allow fabia gpupll0 rate setting
clk: qcom: gpucc-msm8998: Add resets, cxc, fix flags on gpu_gx_gdsc
clk: qcom: gdsc: Implement NO_RET_PERIPH flag
clk: mstar: MStar/SigmaStar MPLL driver
...
Diffstat (limited to 'drivers/soc')
-rw-r--r-- | drivers/soc/xilinx/Kconfig | 17 | ||||
-rw-r--r-- | drivers/soc/xilinx/Makefile | 1 | ||||
-rw-r--r-- | drivers/soc/xilinx/xlnx_vcu.c | 628 |
3 files changed, 0 insertions, 646 deletions
diff --git a/drivers/soc/xilinx/Kconfig b/drivers/soc/xilinx/Kconfig index 0b1708dae361..53af9115dc31 100644 --- a/drivers/soc/xilinx/Kconfig +++ b/drivers/soc/xilinx/Kconfig @@ -1,23 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 menu "Xilinx SoC drivers" -config XILINX_VCU - tristate "Xilinx VCU logicoreIP Init" - depends on HAS_IOMEM - select REGMAP_MMIO - help - Provides the driver to enable and disable the isolation between the - processing system and programmable logic part by using the logicoreIP - register set. This driver also configures the frequency based on the - clock information from the logicoreIP register set. - - If you say yes here you get support for the logicoreIP. - - If unsure, say N. - - To compile this driver as a module, choose M here: the - module will be called xlnx_vcu. - config ZYNQMP_POWER bool "Enable Xilinx Zynq MPSoC Power Management driver" depends on PM && ZYNQMP_FIRMWARE diff --git a/drivers/soc/xilinx/Makefile b/drivers/soc/xilinx/Makefile index f66bfea5de17..9854e6f6086b 100644 --- a/drivers/soc/xilinx/Makefile +++ b/drivers/soc/xilinx/Makefile @@ -1,4 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 -obj-$(CONFIG_XILINX_VCU) += xlnx_vcu.o obj-$(CONFIG_ZYNQMP_POWER) += zynqmp_power.o obj-$(CONFIG_ZYNQMP_PM_DOMAINS) += zynqmp_pm_domains.o diff --git a/drivers/soc/xilinx/xlnx_vcu.c b/drivers/soc/xilinx/xlnx_vcu.c deleted file mode 100644 index 14daad4efc58..000000000000 --- a/drivers/soc/xilinx/xlnx_vcu.c +++ /dev/null @@ -1,628 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Xilinx VCU Init - * - * Copyright (C) 2016 - 2017 Xilinx, Inc. - * - * Contacts Dhaval Shah <dshah@xilinx.com> - */ -#include <linux/clk.h> -#include <linux/device.h> -#include <linux/errno.h> -#include <linux/io.h> -#include <linux/mfd/syscon.h> -#include <linux/mfd/syscon/xlnx-vcu.h> -#include <linux/module.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> -#include <linux/regmap.h> - -/* vcu slcr registers, bitmask and shift */ -#define VCU_PLL_CTRL 0x24 -#define VCU_PLL_CTRL_RESET_MASK 0x01 -#define VCU_PLL_CTRL_RESET_SHIFT 0 -#define VCU_PLL_CTRL_BYPASS_MASK 0x01 -#define VCU_PLL_CTRL_BYPASS_SHIFT 3 -#define VCU_PLL_CTRL_FBDIV_MASK 0x7f -#define VCU_PLL_CTRL_FBDIV_SHIFT 8 -#define VCU_PLL_CTRL_POR_IN_MASK 0x01 -#define VCU_PLL_CTRL_POR_IN_SHIFT 1 -#define VCU_PLL_CTRL_PWR_POR_MASK 0x01 -#define VCU_PLL_CTRL_PWR_POR_SHIFT 2 -#define VCU_PLL_CTRL_CLKOUTDIV_MASK 0x03 -#define VCU_PLL_CTRL_CLKOUTDIV_SHIFT 16 -#define VCU_PLL_CTRL_DEFAULT 0 -#define VCU_PLL_DIV2 2 - -#define VCU_PLL_CFG 0x28 -#define VCU_PLL_CFG_RES_MASK 0x0f -#define VCU_PLL_CFG_RES_SHIFT 0 -#define VCU_PLL_CFG_CP_MASK 0x0f -#define VCU_PLL_CFG_CP_SHIFT 5 -#define VCU_PLL_CFG_LFHF_MASK 0x03 -#define VCU_PLL_CFG_LFHF_SHIFT 10 -#define VCU_PLL_CFG_LOCK_CNT_MASK 0x03ff -#define VCU_PLL_CFG_LOCK_CNT_SHIFT 13 -#define VCU_PLL_CFG_LOCK_DLY_MASK 0x7f -#define VCU_PLL_CFG_LOCK_DLY_SHIFT 25 -#define VCU_ENC_CORE_CTRL 0x30 -#define VCU_ENC_MCU_CTRL 0x34 -#define VCU_DEC_CORE_CTRL 0x38 -#define VCU_DEC_MCU_CTRL 0x3c -#define VCU_PLL_DIVISOR_MASK 0x3f -#define VCU_PLL_DIVISOR_SHIFT 4 -#define VCU_SRCSEL_MASK 0x01 -#define VCU_SRCSEL_SHIFT 0 -#define VCU_SRCSEL_PLL 1 - -#define VCU_PLL_STATUS 0x60 -#define VCU_PLL_STATUS_LOCK_STATUS_MASK 0x01 - -#define MHZ 1000000 -#define FVCO_MIN (1500U * MHZ) -#define FVCO_MAX (3000U * MHZ) -#define DIVISOR_MIN 0 -#define DIVISOR_MAX 63 -#define FRAC 100 -#define LIMIT (10 * MHZ) - -/** - * struct xvcu_device - Xilinx VCU init device structure - * @dev: Platform device - * @pll_ref: pll ref clock source - * @aclk: axi clock source - * @logicore_reg_ba: logicore reg base address - * @vcu_slcr_ba: vcu_slcr Register base address - * @coreclk: core clock frequency - */ -struct xvcu_device { - struct device *dev; - struct clk *pll_ref; - struct clk *aclk; - struct regmap *logicore_reg_ba; - void __iomem *vcu_slcr_ba; - u32 coreclk; -}; - -static struct regmap_config vcu_settings_regmap_config = { - .name = "regmap", - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 4, - .max_register = 0xfff, - .cache_type = REGCACHE_NONE, -}; - -/** - * struct xvcu_pll_cfg - Helper data - * @fbdiv: The integer portion of the feedback divider to the PLL - * @cp: PLL charge pump control - * @res: PLL loop filter resistor control - * @lfhf: PLL loop filter high frequency capacitor control - * @lock_dly: Lock circuit configuration settings for lock windowsize - * @lock_cnt: Lock circuit counter setting - */ -struct xvcu_pll_cfg { - u32 fbdiv; - u32 cp; - u32 res; - u32 lfhf; - u32 lock_dly; - u32 lock_cnt; -}; - -static const struct xvcu_pll_cfg xvcu_pll_cfg[] = { - { 25, 3, 10, 3, 63, 1000 }, - { 26, 3, 10, 3, 63, 1000 }, - { 27, 4, 6, 3, 63, 1000 }, - { 28, 4, 6, 3, 63, 1000 }, - { 29, 4, 6, 3, 63, 1000 }, - { 30, 4, 6, 3, 63, 1000 }, - { 31, 6, 1, 3, 63, 1000 }, - { 32, 6, 1, 3, 63, 1000 }, - { 33, 4, 10, 3, 63, 1000 }, - { 34, 5, 6, 3, 63, 1000 }, - { 35, 5, 6, 3, 63, 1000 }, - { 36, 5, 6, 3, 63, 1000 }, - { 37, 5, 6, 3, 63, 1000 }, - { 38, 5, 6, 3, 63, 975 }, - { 39, 3, 12, 3, 63, 950 }, - { 40, 3, 12, 3, 63, 925 }, - { 41, 3, 12, 3, 63, 900 }, - { 42, 3, 12, 3, 63, 875 }, - { 43, 3, 12, 3, 63, 850 }, - { 44, 3, 12, 3, 63, 850 }, - { 45, 3, 12, 3, 63, 825 }, - { 46, 3, 12, 3, 63, 800 }, - { 47, 3, 12, 3, 63, 775 }, - { 48, 3, 12, 3, 63, 775 }, - { 49, 3, 12, 3, 63, 750 }, - { 50, 3, 12, 3, 63, 750 }, - { 51, 3, 2, 3, 63, 725 }, - { 52, 3, 2, 3, 63, 700 }, - { 53, 3, 2, 3, 63, 700 }, - { 54, 3, 2, 3, 63, 675 }, - { 55, 3, 2, 3, 63, 675 }, - { 56, 3, 2, 3, 63, 650 }, - { 57, 3, 2, 3, 63, 650 }, - { 58, 3, 2, 3, 63, 625 }, - { 59, 3, 2, 3, 63, 625 }, - { 60, 3, 2, 3, 63, 625 }, - { 61, 3, 2, 3, 63, 600 }, - { 62, 3, 2, 3, 63, 600 }, - { 63, 3, 2, 3, 63, 600 }, - { 64, 3, 2, 3, 63, 600 }, - { 65, 3, 2, 3, 63, 600 }, - { 66, 3, 2, 3, 63, 600 }, - { 67, 3, 2, 3, 63, 600 }, - { 68, 3, 2, 3, 63, 600 }, - { 69, 3, 2, 3, 63, 600 }, - { 70, 3, 2, 3, 63, 600 }, - { 71, 3, 2, 3, 63, 600 }, - { 72, 3, 2, 3, 63, 600 }, - { 73, 3, 2, 3, 63, 600 }, - { 74, 3, 2, 3, 63, 600 }, - { 75, 3, 2, 3, 63, 600 }, - { 76, 3, 2, 3, 63, 600 }, - { 77, 3, 2, 3, 63, 600 }, - { 78, 3, 2, 3, 63, 600 }, - { 79, 3, 2, 3, 63, 600 }, - { 80, 3, 2, 3, 63, 600 }, - { 81, 3, 2, 3, 63, 600 }, - { 82, 3, 2, 3, 63, 600 }, - { 83, 4, 2, 3, 63, 600 }, - { 84, 4, 2, 3, 63, 600 }, - { 85, 4, 2, 3, 63, 600 }, - { 86, 4, 2, 3, 63, 600 }, - { 87, 4, 2, 3, 63, 600 }, - { 88, 4, 2, 3, 63, 600 }, - { 89, 4, 2, 3, 63, 600 }, - { 90, 4, 2, 3, 63, 600 }, - { 91, 4, 2, 3, 63, 600 }, - { 92, 4, 2, 3, 63, 600 }, - { 93, 4, 2, 3, 63, 600 }, - { 94, 4, 2, 3, 63, 600 }, - { 95, 4, 2, 3, 63, 600 }, - { 96, 4, 2, 3, 63, 600 }, - { 97, 4, 2, 3, 63, 600 }, - { 98, 4, 2, 3, 63, 600 }, - { 99, 4, 2, 3, 63, 600 }, - { 100, 4, 2, 3, 63, 600 }, - { 101, 4, 2, 3, 63, 600 }, - { 102, 4, 2, 3, 63, 600 }, - { 103, 5, 2, 3, 63, 600 }, - { 104, 5, 2, 3, 63, 600 }, - { 105, 5, 2, 3, 63, 600 }, - { 106, 5, 2, 3, 63, 600 }, - { 107, 3, 4, 3, 63, 600 }, - { 108, 3, 4, 3, 63, 600 }, - { 109, 3, 4, 3, 63, 600 }, - { 110, 3, 4, 3, 63, 600 }, - { 111, 3, 4, 3, 63, 600 }, - { 112, 3, 4, 3, 63, 600 }, - { 113, 3, 4, 3, 63, 600 }, - { 114, 3, 4, 3, 63, 600 }, - { 115, 3, 4, 3, 63, 600 }, - { 116, 3, 4, 3, 63, 600 }, - { 117, 3, 4, 3, 63, 600 }, - { 118, 3, 4, 3, 63, 600 }, - { 119, 3, 4, 3, 63, 600 }, - { 120, 3, 4, 3, 63, 600 }, - { 121, 3, 4, 3, 63, 600 }, - { 122, 3, 4, 3, 63, 600 }, - { 123, 3, 4, 3, 63, 600 }, - { 124, 3, 4, 3, 63, 600 }, - { 125, 3, 4, 3, 63, 600 }, -}; - -/** - * xvcu_read - Read from the VCU register space - * @iomem: vcu reg space base address - * @offset: vcu reg offset from base - * - * Return: Returns 32bit value from VCU register specified - * - */ -static inline u32 xvcu_read(void __iomem *iomem, u32 offset) -{ - return ioread32(iomem + offset); -} - -/** - * xvcu_write - Write to the VCU register space - * @iomem: vcu reg space base address - * @offset: vcu reg offset from base - * @value: Value to write - */ -static inline void xvcu_write(void __iomem *iomem, u32 offset, u32 value) -{ - iowrite32(value, iomem + offset); -} - -/** - * xvcu_write_field_reg - Write to the vcu reg field - * @iomem: vcu reg space base address - * @offset: vcu reg offset from base - * @field: vcu reg field to write to - * @mask: vcu reg mask - * @shift: vcu reg number of bits to shift the bitfield - */ -static void xvcu_write_field_reg(void __iomem *iomem, int offset, - u32 field, u32 mask, int shift) -{ - u32 val = xvcu_read(iomem, offset); - - val &= ~(mask << shift); - val |= (field & mask) << shift; - - xvcu_write(iomem, offset, val); -} - -/** - * xvcu_set_vcu_pll_info - Set the VCU PLL info - * @xvcu: Pointer to the xvcu_device structure - * - * Programming the VCU PLL based on the user configuration - * (ref clock freq, core clock freq, mcu clock freq). - * Core clock frequency has higher priority than mcu clock frequency - * Errors in following cases - * - When mcu or clock clock get from logicoreIP is 0 - * - When VCU PLL DIV related bits value other than 1 - * - When proper data not found for given data - * - When sis570_1 clocksource related operation failed - * - * Return: Returns status, either success or error+reason - */ -static int xvcu_set_vcu_pll_info(struct xvcu_device *xvcu) -{ - u32 refclk, coreclk, mcuclk, inte, deci; - u32 divisor_mcu, divisor_core, fvco; - u32 clkoutdiv, vcu_pll_ctrl, pll_clk; - u32 cfg_val, mod, ctrl; - int ret, i; - const struct xvcu_pll_cfg *found = NULL; - - regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK, &inte); - regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK_DEC, &deci); - regmap_read(xvcu->logicore_reg_ba, VCU_CORE_CLK, &coreclk); - coreclk *= MHZ; - regmap_read(xvcu->logicore_reg_ba, VCU_MCU_CLK, &mcuclk); - mcuclk *= MHZ; - if (!mcuclk || !coreclk) { - dev_err(xvcu->dev, "Invalid mcu and core clock data\n"); - return -EINVAL; - } - - refclk = (inte * MHZ) + (deci * (MHZ / FRAC)); - dev_dbg(xvcu->dev, "Ref clock from logicoreIP is %uHz\n", refclk); - dev_dbg(xvcu->dev, "Core clock from logicoreIP is %uHz\n", coreclk); - dev_dbg(xvcu->dev, "Mcu clock from logicoreIP is %uHz\n", mcuclk); - - clk_disable_unprepare(xvcu->pll_ref); - ret = clk_set_rate(xvcu->pll_ref, refclk); - if (ret) - dev_warn(xvcu->dev, "failed to set logicoreIP refclk rate\n"); - - ret = clk_prepare_enable(xvcu->pll_ref); - if (ret) { - dev_err(xvcu->dev, "failed to enable pll_ref clock source\n"); - return ret; - } - - refclk = clk_get_rate(xvcu->pll_ref); - - /* - * The divide-by-2 should be always enabled (==1) - * to meet the timing in the design. - * Otherwise, it's an error - */ - vcu_pll_ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_PLL_CTRL); - clkoutdiv = vcu_pll_ctrl >> VCU_PLL_CTRL_CLKOUTDIV_SHIFT; - clkoutdiv = clkoutdiv & VCU_PLL_CTRL_CLKOUTDIV_MASK; - if (clkoutdiv != 1) { - dev_err(xvcu->dev, "clkoutdiv value is invalid\n"); - return -EINVAL; - } - - for (i = ARRAY_SIZE(xvcu_pll_cfg) - 1; i >= 0; i--) { - const struct xvcu_pll_cfg *cfg = &xvcu_pll_cfg[i]; - - fvco = cfg->fbdiv * refclk; - if (fvco >= FVCO_MIN && fvco <= FVCO_MAX) { - pll_clk = fvco / VCU_PLL_DIV2; - if (fvco % VCU_PLL_DIV2 != 0) - pll_clk++; - mod = pll_clk % coreclk; - if (mod < LIMIT) { - divisor_core = pll_clk / coreclk; - } else if (coreclk - mod < LIMIT) { - divisor_core = pll_clk / coreclk; - divisor_core++; - } else { - continue; - } - if (divisor_core >= DIVISOR_MIN && - divisor_core <= DIVISOR_MAX) { - found = cfg; - divisor_mcu = pll_clk / mcuclk; - mod = pll_clk % mcuclk; - if (mcuclk - mod < LIMIT) - divisor_mcu++; - break; - } - } - } - - if (!found) { - dev_err(xvcu->dev, "Invalid clock combination.\n"); - return -EINVAL; - } - - xvcu->coreclk = pll_clk / divisor_core; - mcuclk = pll_clk / divisor_mcu; - dev_dbg(xvcu->dev, "Actual Ref clock freq is %uHz\n", refclk); - dev_dbg(xvcu->dev, "Actual Core clock freq is %uHz\n", xvcu->coreclk); - dev_dbg(xvcu->dev, "Actual Mcu clock freq is %uHz\n", mcuclk); - - vcu_pll_ctrl &= ~(VCU_PLL_CTRL_FBDIV_MASK << VCU_PLL_CTRL_FBDIV_SHIFT); - vcu_pll_ctrl |= (found->fbdiv & VCU_PLL_CTRL_FBDIV_MASK) << - VCU_PLL_CTRL_FBDIV_SHIFT; - vcu_pll_ctrl &= ~(VCU_PLL_CTRL_POR_IN_MASK << - VCU_PLL_CTRL_POR_IN_SHIFT); - vcu_pll_ctrl |= (VCU_PLL_CTRL_DEFAULT & VCU_PLL_CTRL_POR_IN_MASK) << - VCU_PLL_CTRL_POR_IN_SHIFT; - vcu_pll_ctrl &= ~(VCU_PLL_CTRL_PWR_POR_MASK << - VCU_PLL_CTRL_PWR_POR_SHIFT); - vcu_pll_ctrl |= (VCU_PLL_CTRL_DEFAULT & VCU_PLL_CTRL_PWR_POR_MASK) << - VCU_PLL_CTRL_PWR_POR_SHIFT; - xvcu_write(xvcu->vcu_slcr_ba, VCU_PLL_CTRL, vcu_pll_ctrl); - - /* Set divisor for the core and mcu clock */ - ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_ENC_CORE_CTRL); - ctrl &= ~(VCU_PLL_DIVISOR_MASK << VCU_PLL_DIVISOR_SHIFT); - ctrl |= (divisor_core & VCU_PLL_DIVISOR_MASK) << - VCU_PLL_DIVISOR_SHIFT; - ctrl &= ~(VCU_SRCSEL_MASK << VCU_SRCSEL_SHIFT); - ctrl |= (VCU_SRCSEL_PLL & VCU_SRCSEL_MASK) << VCU_SRCSEL_SHIFT; - xvcu_write(xvcu->vcu_slcr_ba, VCU_ENC_CORE_CTRL, ctrl); - - ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_DEC_CORE_CTRL); - ctrl &= ~(VCU_PLL_DIVISOR_MASK << VCU_PLL_DIVISOR_SHIFT); - ctrl |= (divisor_core & VCU_PLL_DIVISOR_MASK) << - VCU_PLL_DIVISOR_SHIFT; - ctrl &= ~(VCU_SRCSEL_MASK << VCU_SRCSEL_SHIFT); - ctrl |= (VCU_SRCSEL_PLL & VCU_SRCSEL_MASK) << VCU_SRCSEL_SHIFT; - xvcu_write(xvcu->vcu_slcr_ba, VCU_DEC_CORE_CTRL, ctrl); - - ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_ENC_MCU_CTRL); - ctrl &= ~(VCU_PLL_DIVISOR_MASK << VCU_PLL_DIVISOR_SHIFT); - ctrl |= (divisor_mcu & VCU_PLL_DIVISOR_MASK) << VCU_PLL_DIVISOR_SHIFT; - ctrl &= ~(VCU_SRCSEL_MASK << VCU_SRCSEL_SHIFT); - ctrl |= (VCU_SRCSEL_PLL & VCU_SRCSEL_MASK) << VCU_SRCSEL_SHIFT; - xvcu_write(xvcu->vcu_slcr_ba, VCU_ENC_MCU_CTRL, ctrl); - - ctrl = xvcu_read(xvcu->vcu_slcr_ba, VCU_DEC_MCU_CTRL); - ctrl &= ~(VCU_PLL_DIVISOR_MASK << VCU_PLL_DIVISOR_SHIFT); - ctrl |= (divisor_mcu & VCU_PLL_DIVISOR_MASK) << VCU_PLL_DIVISOR_SHIFT; - ctrl &= ~(VCU_SRCSEL_MASK << VCU_SRCSEL_SHIFT); - ctrl |= (VCU_SRCSEL_PLL & VCU_SRCSEL_MASK) << VCU_SRCSEL_SHIFT; - xvcu_write(xvcu->vcu_slcr_ba, VCU_DEC_MCU_CTRL, ctrl); - - /* Set RES, CP, LFHF, LOCK_CNT and LOCK_DLY cfg values */ - cfg_val = (found->res << VCU_PLL_CFG_RES_SHIFT) | - (found->cp << VCU_PLL_CFG_CP_SHIFT) | - (found->lfhf << VCU_PLL_CFG_LFHF_SHIFT) | - (found->lock_cnt << VCU_PLL_CFG_LOCK_CNT_SHIFT) | - (found->lock_dly << VCU_PLL_CFG_LOCK_DLY_SHIFT); - xvcu_write(xvcu->vcu_slcr_ba, VCU_PLL_CFG, cfg_val); - - return 0; -} - -/** - * xvcu_set_pll - PLL init sequence - * @xvcu: Pointer to the xvcu_device structure - * - * Call the api to set the PLL info and once that is done then - * init the PLL sequence to make the PLL stable. - * - * Return: Returns status, either success or error+reason - */ -static int xvcu_set_pll(struct xvcu_device *xvcu) -{ - u32 lock_status; - unsigned long timeout; - int ret; - - ret = xvcu_set_vcu_pll_info(xvcu); - if (ret) { - dev_err(xvcu->dev, "failed to set pll info\n"); - return ret; - } - - xvcu_write_field_reg(xvcu->vcu_slcr_ba, VCU_PLL_CTRL, - 1, VCU_PLL_CTRL_BYPASS_MASK, - VCU_PLL_CTRL_BYPASS_SHIFT); - xvcu_write_field_reg(xvcu->vcu_slcr_ba, VCU_PLL_CTRL, - 1, VCU_PLL_CTRL_RESET_MASK, - VCU_PLL_CTRL_RESET_SHIFT); - xvcu_write_field_reg(xvcu->vcu_slcr_ba, VCU_PLL_CTRL, - 0, VCU_PLL_CTRL_RESET_MASK, - VCU_PLL_CTRL_RESET_SHIFT); - /* - * Defined the timeout for the max time to wait the - * PLL_STATUS to be locked. - */ - timeout = jiffies + msecs_to_jiffies(2000); - do { - lock_status = xvcu_read(xvcu->vcu_slcr_ba, VCU_PLL_STATUS); - if (lock_status & VCU_PLL_STATUS_LOCK_STATUS_MASK) { - xvcu_write_field_reg(xvcu->vcu_slcr_ba, VCU_PLL_CTRL, - 0, VCU_PLL_CTRL_BYPASS_MASK, - VCU_PLL_CTRL_BYPASS_SHIFT); - return 0; - } - } while (!time_after(jiffies, timeout)); - - /* PLL is not locked even after the timeout of the 2sec */ - dev_err(xvcu->dev, "PLL is not locked\n"); - return -ETIMEDOUT; -} - -/** - * xvcu_probe - Probe existence of the logicoreIP - * and initialize PLL - * - * @pdev: Pointer to the platform_device structure - * - * Return: Returns 0 on success - * Negative error code otherwise - */ -static int xvcu_probe(struct platform_device *pdev) -{ - struct resource *res; - struct xvcu_device *xvcu; - void __iomem *regs; - int ret; - - xvcu = devm_kzalloc(&pdev->dev, sizeof(*xvcu), GFP_KERNEL); - if (!xvcu) - return -ENOMEM; - - xvcu->dev = &pdev->dev; - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vcu_slcr"); - if (!res) { - dev_err(&pdev->dev, "get vcu_slcr memory resource failed.\n"); - return -ENODEV; - } - - xvcu->vcu_slcr_ba = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - if (!xvcu->vcu_slcr_ba) { - dev_err(&pdev->dev, "vcu_slcr register mapping failed.\n"); - return -ENOMEM; - } - - xvcu->logicore_reg_ba = - syscon_regmap_lookup_by_compatible("xlnx,vcu-settings"); - if (IS_ERR(xvcu->logicore_reg_ba)) { - dev_info(&pdev->dev, - "could not find xlnx,vcu-settings: trying direct register access\n"); - - res = platform_get_resource_byname(pdev, - IORESOURCE_MEM, "logicore"); - if (!res) { - dev_err(&pdev->dev, "get logicore memory resource failed.\n"); - return -ENODEV; - } - - regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - if (!regs) { - dev_err(&pdev->dev, "logicore register mapping failed.\n"); - return -ENOMEM; - } - - xvcu->logicore_reg_ba = - devm_regmap_init_mmio(&pdev->dev, regs, - &vcu_settings_regmap_config); - if (IS_ERR(xvcu->logicore_reg_ba)) { - dev_err(&pdev->dev, "failed to init regmap\n"); - return PTR_ERR(xvcu->logicore_reg_ba); - } - } - - xvcu->aclk = devm_clk_get(&pdev->dev, "aclk"); - if (IS_ERR(xvcu->aclk)) { - dev_err(&pdev->dev, "Could not get aclk clock\n"); - return PTR_ERR(xvcu->aclk); - } - - xvcu->pll_ref = devm_clk_get(&pdev->dev, "pll_ref"); - if (IS_ERR(xvcu->pll_ref)) { - dev_err(&pdev->dev, "Could not get pll_ref clock\n"); - return PTR_ERR(xvcu->pll_ref); - } - - ret = clk_prepare_enable(xvcu->aclk); - if (ret) { - dev_err(&pdev->dev, "aclk clock enable failed\n"); - return ret; - } - - ret = clk_prepare_enable(xvcu->pll_ref); - if (ret) { - dev_err(&pdev->dev, "pll_ref clock enable failed\n"); - goto error_aclk; - } - - /* - * Do the Gasket isolation and put the VCU out of reset - * Bit 0 : Gasket isolation - * Bit 1 : put VCU out of reset - */ - regmap_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, VCU_GASKET_VALUE); - - /* Do the PLL Settings based on the ref clk,core and mcu clk freq */ - ret = xvcu_set_pll(xvcu); - if (ret) { - dev_err(&pdev->dev, "Failed to set the pll\n"); - goto error_pll_ref; - } - - dev_set_drvdata(&pdev->dev, xvcu); - - return 0; - -error_pll_ref: - clk_disable_unprepare(xvcu->pll_ref); -error_aclk: - clk_disable_unprepare(xvcu->aclk); - return ret; -} - -/** - * xvcu_remove - Insert gasket isolation - * and disable the clock - * @pdev: Pointer to the platform_device structure - * - * Return: Returns 0 on success - * Negative error code otherwise - */ -static int xvcu_remove(struct platform_device *pdev) -{ - struct xvcu_device *xvcu; - - xvcu = platform_get_drvdata(pdev); - if (!xvcu) - return -ENODEV; - - /* Add the the Gasket isolation and put the VCU in reset. */ - regmap_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, 0); - - clk_disable_unprepare(xvcu->pll_ref); - clk_disable_unprepare(xvcu->aclk); - - return 0; -} - -static const struct of_device_id xvcu_of_id_table[] = { - { .compatible = "xlnx,vcu" }, - { .compatible = "xlnx,vcu-logicoreip-1.0" }, - { } -}; -MODULE_DEVICE_TABLE(of, xvcu_of_id_table); - -static struct platform_driver xvcu_driver = { - .driver = { - .name = "xilinx-vcu", - .of_match_table = xvcu_of_id_table, - }, - .probe = xvcu_probe, - .remove = xvcu_remove, -}; - -module_platform_driver(xvcu_driver); - -MODULE_AUTHOR("Dhaval Shah <dshah@xilinx.com>"); -MODULE_DESCRIPTION("Xilinx VCU init Driver"); -MODULE_LICENSE("GPL v2"); |