clk: qcom: Add Video Clock controller (VIDEOCC) driver for Milos

Add support for the video clock controller found on Milos (e.g. SM7635)
based devices.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20250715-sm7635-clocks-v3-11-18f9faac4984@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 7737cc7a774faad53f215b8a18de08ae58d4a83c..6cb6cd3e1778ad3f2b6af3b8ebf22c7fb927cfe9 100644 (file)
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -1429,6 +1429,17 @@ config SM_VIDEOCC_7150
          Say Y if you want to support video devices and functionality such as
          video encode and decode.
 
+config SM_VIDEOCC_MILOS
+       tristate "Milos Video Clock Controller"
+       depends on ARM64 || COMPILE_TEST
+       select SM_GCC_MILOS
+       select QCOM_GDSC
+       help
+         Support for the video clock controller on Qualcomm Technologies, Inc.
+         Milos devices.
+         Say Y if you want to support video devices and functionality such as
+         video encode/decode.
+
 config SM_VIDEOCC_8150
        tristate "SM8150 Video Clock Controller"
        depends on ARM64 || COMPILE_TEST

diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index ead1ccf990be8c063098de6e2a2766002fbc3ed7..ddb7e06fae405de33c1cd4a68f4cf976f503c930 100644 (file)
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -180,6 +180,7 @@ obj-$(CONFIG_SM_VIDEOCC_8250) += videocc-sm8250.o
 obj-$(CONFIG_SM_VIDEOCC_8350) += videocc-sm8350.o
 obj-$(CONFIG_SM_VIDEOCC_8450) += videocc-sm8450.o
 obj-$(CONFIG_SM_VIDEOCC_8550) += videocc-sm8550.o
+obj-$(CONFIG_SM_VIDEOCC_MILOS) += videocc-milos.o
 obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
 obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
 obj-$(CONFIG_QCOM_HFPLL) += hfpll.o

diff --git a/drivers/clk/qcom/videocc-milos.c b/drivers/clk/qcom/videocc-milos.c
new file mode 100644 (file)
index 0000000..998301e
--- /dev/null
+++ b/drivers/clk/qcom/videocc-milos.c
@@ -0,0 +1,403 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2025, Luca Weiss <luca.weiss@fairphone.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,milos-videocc.h>
+
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "clk-regmap-divider.h"
+#include "common.h"
+#include "gdsc.h"
+#include "reset.h"
+
+/* Need to match the order of clocks in DT binding */
+enum {
+       DT_BI_TCXO,
+       DT_BI_TCXO_AO,
+       DT_SLEEP_CLK,
+       DT_IFACE,
+};
+
+enum {
+       P_BI_TCXO,
+       P_SLEEP_CLK,
+       P_VIDEO_CC_PLL0_OUT_MAIN,
+};
+
+static const struct pll_vco lucid_ole_vco[] = {
+       { 249600000, 2300000000, 0 },
+};
+
+/* 604.8 MHz Configuration */
+static const struct alpha_pll_config video_cc_pll0_config = {
+       .l = 0x1f,
+       .alpha = 0x8000,
+       .config_ctl_val = 0x20485699,
+       .config_ctl_hi_val = 0x00182261,
+       .config_ctl_hi1_val = 0x82aa299c,
+       .test_ctl_val = 0x00000000,
+       .test_ctl_hi_val = 0x00000003,
+       .test_ctl_hi1_val = 0x00009000,
+       .test_ctl_hi2_val = 0x00000034,
+       .user_ctl_val = 0x00000000,
+       .user_ctl_hi_val = 0x00000005,
+};
+
+static struct clk_alpha_pll video_cc_pll0 = {
+       .offset = 0x0,
+       .config = &video_cc_pll0_config,
+       .vco_table = lucid_ole_vco,
+       .num_vco = ARRAY_SIZE(lucid_ole_vco),
+       .regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
+       .clkr = {
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "video_cc_pll0",
+                       .parent_data = &(const struct clk_parent_data) {
+                               .index = DT_BI_TCXO,
+                       },
+                       .num_parents = 1,
+                       .ops = &clk_alpha_pll_lucid_evo_ops,
+               },
+       },
+};
+
+static const struct parent_map video_cc_parent_map_0[] = {
+       { P_BI_TCXO, 0 },
+};
+
+static const struct clk_parent_data video_cc_parent_data_0[] = {
+       { .index = DT_BI_TCXO },
+};
+
+static const struct clk_parent_data video_cc_parent_data_0_ao[] = {
+       { .index = DT_BI_TCXO_AO },
+};
+
+static const struct parent_map video_cc_parent_map_1[] = {
+       { P_BI_TCXO, 0 },
+       { P_VIDEO_CC_PLL0_OUT_MAIN, 1 },
+};
+
+static const struct clk_parent_data video_cc_parent_data_1[] = {
+       { .index = DT_BI_TCXO },
+       { .hw = &video_cc_pll0.clkr.hw },
+};
+
+static const struct parent_map video_cc_parent_map_2[] = {
+       { P_SLEEP_CLK, 0 },
+};
+
+static const struct clk_parent_data video_cc_parent_data_2_ao[] = {
+       { .index = DT_SLEEP_CLK },
+};
+
+static const struct freq_tbl ftbl_video_cc_ahb_clk_src[] = {
+       F(19200000, P_BI_TCXO, 1, 0, 0),
+       { }
+};
+
+static struct clk_rcg2 video_cc_ahb_clk_src = {
+       .cmd_rcgr = 0x8030,
+       .mnd_width = 0,
+       .hid_width = 5,
+       .parent_map = video_cc_parent_map_0,
+       .freq_tbl = ftbl_video_cc_ahb_clk_src,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_ahb_clk_src",
+               .parent_data = video_cc_parent_data_0_ao,
+               .num_parents = ARRAY_SIZE(video_cc_parent_data_0_ao),
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_rcg2_shared_ops,
+       },
+};
+
+static const struct freq_tbl ftbl_video_cc_mvs0_clk_src[] = {
+       F(604800000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       F(720000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       F(1014000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       F(1098000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       F(1332000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       F(1656000000, P_VIDEO_CC_PLL0_OUT_MAIN, 1, 0, 0),
+       { }
+};
+
+static struct clk_rcg2 video_cc_mvs0_clk_src = {
+       .cmd_rcgr = 0x8000,
+       .mnd_width = 0,
+       .hid_width = 5,
+       .parent_map = video_cc_parent_map_1,
+       .freq_tbl = ftbl_video_cc_mvs0_clk_src,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_mvs0_clk_src",
+               .parent_data = video_cc_parent_data_1,
+               .num_parents = ARRAY_SIZE(video_cc_parent_data_1),
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_rcg2_shared_ops,
+       },
+};
+
+static const struct freq_tbl ftbl_video_cc_sleep_clk_src[] = {
+       F(32000, P_SLEEP_CLK, 1, 0, 0),
+       { }
+};
+
+static struct clk_rcg2 video_cc_sleep_clk_src = {
+       .cmd_rcgr = 0x8128,
+       .mnd_width = 0,
+       .hid_width = 5,
+       .parent_map = video_cc_parent_map_2,
+       .freq_tbl = ftbl_video_cc_sleep_clk_src,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_sleep_clk_src",
+               .parent_data = video_cc_parent_data_2_ao,
+               .num_parents = ARRAY_SIZE(video_cc_parent_data_2_ao),
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_rcg2_ops,
+       },
+};
+
+static struct clk_rcg2 video_cc_xo_clk_src = {
+       .cmd_rcgr = 0x810c,
+       .mnd_width = 0,
+       .hid_width = 5,
+       .parent_map = video_cc_parent_map_0,
+       .freq_tbl = ftbl_video_cc_ahb_clk_src,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_xo_clk_src",
+               .parent_data = video_cc_parent_data_0,
+               .num_parents = ARRAY_SIZE(video_cc_parent_data_0),
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_rcg2_ops,
+       },
+};
+
+static struct clk_regmap_div video_cc_mvs0_div_clk_src = {
+       .reg = 0x80c4,
+       .shift = 0,
+       .width = 4,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_mvs0_div_clk_src",
+               .parent_hws = (const struct clk_hw*[]) {
+                       &video_cc_mvs0_clk_src.clkr.hw,
+               },
+               .num_parents = 1,
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_regmap_div_ro_ops,
+       },
+};
+
+static struct clk_regmap_div video_cc_mvs0c_div2_div_clk_src = {
+       .reg = 0x8070,
+       .shift = 0,
+       .width = 4,
+       .clkr.hw.init = &(const struct clk_init_data) {
+               .name = "video_cc_mvs0c_div2_div_clk_src",
+               .parent_hws = (const struct clk_hw*[]) {
+                       &video_cc_mvs0_clk_src.clkr.hw,
+               },
+               .num_parents = 1,
+               .flags = CLK_SET_RATE_PARENT,
+               .ops = &clk_regmap_div_ro_ops,
+       },
+};
+
+static struct clk_branch video_cc_mvs0_clk = {
+       .halt_reg = 0x80b8,
+       .halt_check = BRANCH_HALT_VOTED,
+       .hwcg_reg = 0x80b8,
+       .hwcg_bit = 1,
+       .clkr = {
+               .enable_reg = 0x80b8,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "video_cc_mvs0_clk",
+                       .parent_hws = (const struct clk_hw*[]) {
+                               &video_cc_mvs0_div_clk_src.clkr.hw,
+                       },
+                       .num_parents = 1,
+                       .flags = CLK_SET_RATE_PARENT,
+                       .ops = &clk_branch2_ops,
+               },
+       },
+};
+
+static struct clk_branch video_cc_mvs0_shift_clk = {
+       .halt_reg = 0x8144,
+       .halt_check = BRANCH_HALT_VOTED,
+       .hwcg_reg = 0x8144,
+       .hwcg_bit = 1,
+       .clkr = {
+               .enable_reg = 0x8144,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "video_cc_mvs0_shift_clk",
+                       .parent_hws = (const struct clk_hw*[]) {
+                               &video_cc_xo_clk_src.clkr.hw,
+                       },
+                       .num_parents = 1,
+                       .flags = CLK_SET_RATE_PARENT,
+                       .ops = &clk_branch2_ops,
+               },
+       },
+};
+
+static struct clk_branch video_cc_mvs0c_clk = {
+       .halt_reg = 0x8064,
+       .halt_check = BRANCH_HALT,
+       .clkr = {
+               .enable_reg = 0x8064,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "video_cc_mvs0c_clk",
+                       .parent_hws = (const struct clk_hw*[]) {
+                               &video_cc_mvs0c_div2_div_clk_src.clkr.hw,
+                       },
+                       .num_parents = 1,
+                       .flags = CLK_SET_RATE_PARENT,
+                       .ops = &clk_branch2_ops,
+               },
+       },
+};
+
+static struct clk_branch video_cc_mvs0c_shift_clk = {
+       .halt_reg = 0x8148,
+       .halt_check = BRANCH_HALT_VOTED,
+       .hwcg_reg = 0x8148,
+       .hwcg_bit = 1,
+       .clkr = {
+               .enable_reg = 0x8148,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "video_cc_mvs0c_shift_clk",
+                       .parent_hws = (const struct clk_hw*[]) {
+                               &video_cc_xo_clk_src.clkr.hw,
+                       },
+                       .num_parents = 1,
+                       .flags = CLK_SET_RATE_PARENT,
+                       .ops = &clk_branch2_ops,
+               },
+       },
+};
+
+static struct gdsc video_cc_mvs0c_gdsc = {
+       .gdscr = 0x804c,
+       .en_rest_wait_val = 0x2,
+       .en_few_wait_val = 0x2,
+       .clk_dis_wait_val = 0x6,
+       .pd = {
+               .name = "video_cc_mvs0c_gdsc",
+       },
+       .pwrsts = PWRSTS_OFF_ON,
+       .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE,
+};
+
+static struct gdsc video_cc_mvs0_gdsc = {
+       .gdscr = 0x80a4,
+       .en_rest_wait_val = 0x2,
+       .en_few_wait_val = 0x2,
+       .clk_dis_wait_val = 0x6,
+       .pd = {
+               .name = "video_cc_mvs0_gdsc",
+       },
+       .pwrsts = PWRSTS_OFF_ON,
+       .parent = &video_cc_mvs0c_gdsc.pd,
+       .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE | HW_CTRL_TRIGGER,
+};
+
+static struct clk_regmap *video_cc_milos_clocks[] = {
+       [VIDEO_CC_AHB_CLK_SRC] = &video_cc_ahb_clk_src.clkr,
+       [VIDEO_CC_MVS0_CLK] = &video_cc_mvs0_clk.clkr,
+       [VIDEO_CC_MVS0_CLK_SRC] = &video_cc_mvs0_clk_src.clkr,
+       [VIDEO_CC_MVS0_DIV_CLK_SRC] = &video_cc_mvs0_div_clk_src.clkr,
+       [VIDEO_CC_MVS0_SHIFT_CLK] = &video_cc_mvs0_shift_clk.clkr,
+       [VIDEO_CC_MVS0C_CLK] = &video_cc_mvs0c_clk.clkr,
+       [VIDEO_CC_MVS0C_DIV2_DIV_CLK_SRC] = &video_cc_mvs0c_div2_div_clk_src.clkr,
+       [VIDEO_CC_MVS0C_SHIFT_CLK] = &video_cc_mvs0c_shift_clk.clkr,
+       [VIDEO_CC_PLL0] = &video_cc_pll0.clkr,
+       [VIDEO_CC_SLEEP_CLK_SRC] = &video_cc_sleep_clk_src.clkr,
+       [VIDEO_CC_XO_CLK_SRC] = &video_cc_xo_clk_src.clkr,
+};
+
+static struct gdsc *video_cc_milos_gdscs[] = {
+       [VIDEO_CC_MVS0C_GDSC] = &video_cc_mvs0c_gdsc,
+       [VIDEO_CC_MVS0_GDSC] = &video_cc_mvs0_gdsc,
+};
+
+static const struct qcom_reset_map video_cc_milos_resets[] = {
+       [VIDEO_CC_INTERFACE_BCR] = { 0x80f0 },
+       [VIDEO_CC_MVS0_BCR] = { 0x80a0 },
+       [VIDEO_CC_MVS0C_CLK_ARES] = { 0x8064, 2 },
+       [VIDEO_CC_MVS0C_BCR] = { 0x8048 },
+};
+
+static struct clk_alpha_pll *video_cc_milos_plls[] = {
+       &video_cc_pll0,
+};
+
+static u32 video_cc_milos_critical_cbcrs[] = {
+       0x80f4, /* VIDEO_CC_AHB_CLK */
+       0x8140, /* VIDEO_CC_SLEEP_CLK */
+       0x8124, /* VIDEO_CC_XO_CLK */
+};
+
+static const struct regmap_config video_cc_milos_regmap_config = {
+       .reg_bits = 32,
+       .reg_stride = 4,
+       .val_bits = 32,
+       .max_register = 0x9f50,
+       .fast_io = true,
+};
+
+static struct qcom_cc_driver_data video_cc_milos_driver_data = {
+       .alpha_plls = video_cc_milos_plls,
+       .num_alpha_plls = ARRAY_SIZE(video_cc_milos_plls),
+       .clk_cbcrs = video_cc_milos_critical_cbcrs,
+       .num_clk_cbcrs = ARRAY_SIZE(video_cc_milos_critical_cbcrs),
+};
+
+static struct qcom_cc_desc video_cc_milos_desc = {
+       .config = &video_cc_milos_regmap_config,
+       .clks = video_cc_milos_clocks,
+       .num_clks = ARRAY_SIZE(video_cc_milos_clocks),
+       .resets = video_cc_milos_resets,
+       .num_resets = ARRAY_SIZE(video_cc_milos_resets),
+       .gdscs = video_cc_milos_gdscs,
+       .num_gdscs = ARRAY_SIZE(video_cc_milos_gdscs),
+       .use_rpm = true,
+       .driver_data = &video_cc_milos_driver_data,
+};
+
+static const struct of_device_id video_cc_milos_match_table[] = {
+       { .compatible = "qcom,milos-videocc" },
+       { }
+};
+MODULE_DEVICE_TABLE(of, video_cc_milos_match_table);
+
+static int video_cc_milos_probe(struct platform_device *pdev)
+{
+       return qcom_cc_probe(pdev, &video_cc_milos_desc);
+}
+
+static struct platform_driver video_cc_milos_driver = {
+       .probe = video_cc_milos_probe,
+       .driver = {
+               .name = "video_cc-milos",
+               .of_match_table = video_cc_milos_match_table,
+       },
+};
+
+module_platform_driver(video_cc_milos_driver);
+
+MODULE_DESCRIPTION("QTI VIDEO_CC Milos Driver");
+MODULE_LICENSE("GPL");