Re: [PATCH 2/2] clk: qcom: gcc-qdu1000: Update GCC clocks and add support for GDSCs

[Dmitry Baryshkov]

On 16/06/2023 13:49, Imran Shaik wrote:
> Update the GCC clocks and add support for GDSCs for QDU1000 and
> QRU1000 SoCs. While at it, fix the PCIe pipe clock handling and
> add support for v2 variant.

Please split this into individual chunks instead of squashing everything 
together. For each change please describe the logic behind the change in 
the commit message. Please describe why, not what is changed.

> Signed-off-by: Taniya Das <quic_tdas@xxxxxxxxxxx>
> Signed-off-by: Imran Shaik <quic_imrashai@xxxxxxxxxxx>

This doesn't look fully logical. Who is the author of the patch? If 
there are two authors, please add Co-developed-by tag.

> ---
>   drivers/clk/qcom/gcc-qdu1000.c | 162 ++++++++++++++++++++++-----------
>   1 file changed, 110 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/clk/qcom/gcc-qdu1000.c b/drivers/clk/qcom/gcc-qdu1000.c
> index 5051769ad90c..5d8125c0eacc 100644
> --- a/drivers/clk/qcom/gcc-qdu1000.c
> +++ b/drivers/clk/qcom/gcc-qdu1000.c
> @@ -1,6 +1,6 @@
>   // SPDX-License-Identifier: GPL-2.0-only
>   /*
> - * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
>    */
>   
>   #include <linux/clk-provider.h>
> @@ -17,6 +17,7 @@
>   #include "clk-regmap-divider.h"
>   #include "clk-regmap-mux.h"
>   #include "clk-regmap-phy-mux.h"
> +#include "gdsc.h"
>   #include "reset.h"
>   
>   enum {
> @@ -370,16 +371,6 @@ static const struct clk_parent_data gcc_parent_data_6[] = {
>   	{ .index = DT_TCXO_IDX },
>   };
>   
> -static const struct parent_map gcc_parent_map_7[] = {
> -	{ P_PCIE_0_PIPE_CLK, 0 },
> -	{ P_BI_TCXO, 2 },
> -};
> -
> -static const struct clk_parent_data gcc_parent_data_7[] = {
> -	{ .index = DT_PCIE_0_PIPE_CLK_IDX },
> -	{ .index = DT_TCXO_IDX },
> -};
> -
>   static const struct parent_map gcc_parent_map_8[] = {
>   	{ P_BI_TCXO, 0 },
>   	{ P_GCC_GPLL0_OUT_MAIN, 1 },
> @@ -439,16 +430,15 @@ static struct clk_regmap_mux gcc_pcie_0_phy_aux_clk_src = {
>   	},
>   };
>   
> -static struct clk_regmap_mux gcc_pcie_0_pipe_clk_src = {
> +static struct clk_regmap_phy_mux gcc_pcie_0_pipe_clk_src = {
>   	.reg = 0x9d064,
> -	.shift = 0,
> -	.width = 2,
> -	.parent_map = gcc_parent_map_7,
>   	.clkr = {
>   		.hw.init = &(const struct clk_init_data) {
>   			.name = "gcc_pcie_0_pipe_clk_src",
> -			.parent_data = gcc_parent_data_7,
> -			.num_parents = ARRAY_SIZE(gcc_parent_data_7),
> +			.parent_data = &(const struct clk_parent_data){
> +				.index = DT_PCIE_0_PIPE_CLK_IDX,
> +			},
> +			.num_parents = 1,
>   			.ops = &clk_regmap_phy_mux_ops,
>   		},
>   	},
> @@ -485,7 +475,7 @@ static struct clk_rcg2 gcc_aggre_noc_ecpri_dma_clk_src = {
>   		.name = "gcc_aggre_noc_ecpri_dma_clk_src",
>   		.parent_data = gcc_parent_data_4,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_4),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -505,7 +495,7 @@ static struct clk_rcg2 gcc_aggre_noc_ecpri_gsi_clk_src = {
>   		.name = "gcc_aggre_noc_ecpri_gsi_clk_src",
>   		.parent_data = gcc_parent_data_5,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_5),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,

This is probably some kind of NoC or NIU clock. If it is not to be 
touched by Linux, the recent clk_rcg2_ro_ops patch looks promising here.

>   	},
>   };
>   
> @@ -524,7 +514,7 @@ static struct clk_rcg2 gcc_gp1_clk_src = {
>   		.name = "gcc_gp1_clk_src",
>   		.parent_data = gcc_parent_data_1,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_1),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,

But why? GP clocks are not shared.
The 'why?' question applies to all such changes. As I wrote, please 
split & describe the reason.

>   	},
>   };
>   
> @@ -538,7 +528,7 @@ static struct clk_rcg2 gcc_gp2_clk_src = {
>   		.name = "gcc_gp2_clk_src",
>   		.parent_data = gcc_parent_data_1,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_1),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -552,7 +542,7 @@ static struct clk_rcg2 gcc_gp3_clk_src = {
>   		.name = "gcc_gp3_clk_src",
>   		.parent_data = gcc_parent_data_1,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_1),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -571,7 +561,7 @@ static struct clk_rcg2 gcc_pcie_0_aux_clk_src = {
>   		.name = "gcc_pcie_0_aux_clk_src",
>   		.parent_data = gcc_parent_data_3,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_3),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -591,7 +581,7 @@ static struct clk_rcg2 gcc_pcie_0_phy_rchng_clk_src = {
>   		.name = "gcc_pcie_0_phy_rchng_clk_src",
>   		.parent_data = gcc_parent_data_0,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -610,7 +600,7 @@ static struct clk_rcg2 gcc_pdm2_clk_src = {
>   		.name = "gcc_pdm2_clk_src",
>   		.parent_data = gcc_parent_data_0,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -632,7 +622,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s0_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s0_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s0_clk_src = {
> @@ -648,7 +638,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s1_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s1_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s1_clk_src = {
> @@ -664,7 +654,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s2_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s2_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s2_clk_src = {
> @@ -680,7 +670,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s3_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s3_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s3_clk_src = {
> @@ -696,7 +686,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s4_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s4_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s4_clk_src = {
> @@ -717,7 +707,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s5_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s5_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s5_clk_src = {
> @@ -733,7 +723,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s6_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s6_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s6_clk_src = {
> @@ -749,7 +739,7 @@ static struct clk_init_data gcc_qupv3_wrap0_s7_clk_src_init = {
>   	.name = "gcc_qupv3_wrap0_s7_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap0_s7_clk_src = {
> @@ -765,7 +755,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s0_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s0_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s0_clk_src = {
> @@ -781,7 +771,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s1_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s1_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s1_clk_src = {
> @@ -797,7 +787,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s2_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s2_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s2_clk_src = {
> @@ -813,7 +803,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s3_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s3_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s3_clk_src = {
> @@ -829,7 +819,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s4_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s4_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s4_clk_src = {
> @@ -845,7 +835,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s5_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s5_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s5_clk_src = {
> @@ -861,7 +851,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s6_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s6_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s6_clk_src = {
> @@ -877,7 +867,7 @@ static struct clk_init_data gcc_qupv3_wrap1_s7_clk_src_init = {
>   	.name = "gcc_qupv3_wrap1_s7_clk_src",
>   	.parent_data = gcc_parent_data_0,
>   	.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -	.ops = &clk_rcg2_ops,
> +	.ops = &clk_rcg2_shared_ops,
>   };
>   
>   static struct clk_rcg2 gcc_qupv3_wrap1_s7_clk_src = {
> @@ -913,7 +903,7 @@ static struct clk_rcg2 gcc_sdcc5_apps_clk_src = {
>   		.name = "gcc_sdcc5_apps_clk_src",
>   		.parent_data = gcc_parent_data_8,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_8),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_floor_ops,
>   	},
>   };
>   
> @@ -932,7 +922,7 @@ static struct clk_rcg2 gcc_sdcc5_ice_core_clk_src = {
>   		.name = "gcc_sdcc5_ice_core_clk_src",
>   		.parent_data = gcc_parent_data_2,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_2),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_floor_ops,
>   	},
>   };
>   
> @@ -946,7 +936,7 @@ static struct clk_rcg2 gcc_sm_bus_xo_clk_src = {
>   		.name = "gcc_sm_bus_xo_clk_src",
>   		.parent_data = gcc_parent_data_2,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_2),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -965,7 +955,7 @@ static struct clk_rcg2 gcc_tsc_clk_src = {
>   		.name = "gcc_tsc_clk_src",
>   		.parent_data = gcc_parent_data_9,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_9),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -985,7 +975,7 @@ static struct clk_rcg2 gcc_usb30_prim_master_clk_src = {
>   		.name = "gcc_usb30_prim_master_clk_src",
>   		.parent_data = gcc_parent_data_0,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -999,7 +989,7 @@ static struct clk_rcg2 gcc_usb30_prim_mock_utmi_clk_src = {
>   		.name = "gcc_usb30_prim_mock_utmi_clk_src",
>   		.parent_data = gcc_parent_data_0,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -1013,7 +1003,7 @@ static struct clk_rcg2 gcc_usb3_prim_phy_aux_clk_src = {
>   		.name = "gcc_usb3_prim_phy_aux_clk_src",
>   		.parent_data = gcc_parent_data_3,
>   		.num_parents = ARRAY_SIZE(gcc_parent_data_3),
> -		.ops = &clk_rcg2_ops,
> +		.ops = &clk_rcg2_shared_ops,
>   	},
>   };
>   
> @@ -1142,6 +1132,26 @@ static struct clk_branch gcc_ddrss_ecpri_dma_clk = {
>   	},
>   };
>   
> +static struct clk_branch gcc_ddrss_ecpri_gsi_clk = {
> +	.halt_reg = 0x54298,
> +	.halt_check = BRANCH_HALT_VOTED,
> +	.hwcg_reg = 0x54298,
> +	.hwcg_bit = 1,
> +	.clkr = {
> +		.enable_reg = 0x54298,
> +		.enable_mask = BIT(0),
> +		.hw.init = &(const struct clk_init_data) {
> +			.name = "gcc_ddrss_ecpri_gsi_clk",
> +			.parent_hws = (const struct clk_hw*[]) {
> +				&gcc_aggre_noc_ecpri_gsi_clk_src.clkr.hw,
> +			},
> +			.num_parents = 1,
> +			.flags = CLK_SET_RATE_PARENT,
> +			.ops = &clk_branch2_aon_ops,
> +		},
> +	},
> +};
> +
>   static struct clk_branch gcc_ecpri_ahb_clk = {
>   	.halt_reg = 0x3a008,
>   	.halt_check = BRANCH_HALT_VOTED,
> @@ -1458,14 +1468,13 @@ static struct clk_branch gcc_pcie_0_cfg_ahb_clk = {
>   
>   static struct clk_branch gcc_pcie_0_clkref_en = {
>   	.halt_reg = 0x9c004,
> -	.halt_bit = 31,

Why?

>   	.halt_check = BRANCH_HALT_ENABLE,
>   	.clkr = {
>   		.enable_reg = 0x9c004,
>   		.enable_mask = BIT(0),
>   		.hw.init = &(const struct clk_init_data) {
>   			.name = "gcc_pcie_0_clkref_en",
> -			.ops = &clk_branch_ops,
> +			.ops = &clk_branch2_ops,

Separate commit, Fixes tag.

>   		},
>   	},
>   };
> @@ -2285,14 +2294,13 @@ static struct clk_branch gcc_tsc_etu_clk = {
>   
>   static struct clk_branch gcc_usb2_clkref_en = {
>   	.halt_reg = 0x9c008,
> -	.halt_bit = 31,

Why?

>   	.halt_check = BRANCH_HALT_ENABLE,
>   	.clkr = {
>   		.enable_reg = 0x9c008,
>   		.enable_mask = BIT(0),
>   		.hw.init = &(const struct clk_init_data) {
>   			.name = "gcc_usb2_clkref_en",
> -			.ops = &clk_branch_ops,
> +			.ops = &clk_branch2_ops,

And here.

>   		},
>   	},
>   };
> @@ -2402,6 +2410,39 @@ static struct clk_branch gcc_usb3_prim_phy_pipe_clk = {
>   	},
>   };
>   
> +static struct gdsc pcie_0_gdsc = {
> +	.gdscr = 0x9d004,
> +	.en_rest_wait_val = 0x2,
> +	.en_few_wait_val = 0x2,
> +	.clk_dis_wait_val = 0xf,
> +	.pd = {
> +		.name = "gcc_pcie_0_gdsc",
> +	},
> +	.pwrsts = PWRSTS_OFF_ON,
> +};
> +
> +static struct gdsc pcie_0_phy_gdsc = {
> +	.gdscr = 0x7c004,
> +	.en_rest_wait_val = 0x2,
> +	.en_few_wait_val = 0x2,
> +	.clk_dis_wait_val = 0x2,
> +	.pd = {
> +		.name = "gcc_pcie_0_phy_gdsc",
> +	},
> +	.pwrsts = PWRSTS_OFF_ON,
> +};
> +
> +static struct gdsc usb30_prim_gdsc = {
> +	.gdscr = 0x49004,
> +	.en_rest_wait_val = 0x2,
> +	.en_few_wait_val = 0x2,
> +	.clk_dis_wait_val = 0xf,
> +	.pd = {
> +		.name = "gcc_usb30_prim_gdsc",
> +	},
> +	.pwrsts = PWRSTS_OFF_ON,
> +};
> +
>   static struct clk_regmap *gcc_qdu1000_clocks[] = {
>   	[GCC_AGGRE_NOC_ECPRI_DMA_CLK] = &gcc_aggre_noc_ecpri_dma_clk.clkr,
>   	[GCC_AGGRE_NOC_ECPRI_DMA_CLK_SRC] = &gcc_aggre_noc_ecpri_dma_clk_src.clkr,
> @@ -2534,6 +2575,14 @@ static struct clk_regmap *gcc_qdu1000_clocks[] = {
>   	[GCC_AGGRE_NOC_ECPRI_GSI_CLK] = &gcc_aggre_noc_ecpri_gsi_clk.clkr,
>   	[GCC_PCIE_0_PHY_AUX_CLK_SRC] = &gcc_pcie_0_phy_aux_clk_src.clkr,
>   	[GCC_PCIE_0_PIPE_CLK_SRC] = &gcc_pcie_0_pipe_clk_src.clkr,
> +	[GCC_GPLL1_OUT_EVEN] = &gcc_gpll1_out_even.clkr,
> +	[GCC_DDRSS_ECPRI_GSI_CLK] = NULL,
> +};
> +
> +static struct gdsc *gcc_qdu1000_gdscs[] = {
> +	[PCIE_0_GDSC] = &pcie_0_gdsc,
> +	[PCIE_0_PHY_GDSC] = &pcie_0_phy_gdsc,
> +	[USB30_PRIM_GDSC] = &usb30_prim_gdsc,
>   };
>   
>   static const struct qcom_reset_map gcc_qdu1000_resets[] = {
> @@ -2597,10 +2646,13 @@ static const struct qcom_cc_desc gcc_qdu1000_desc = {
>   	.num_clks = ARRAY_SIZE(gcc_qdu1000_clocks),
>   	.resets = gcc_qdu1000_resets,
>   	.num_resets = ARRAY_SIZE(gcc_qdu1000_resets),
> +	.gdscs = gcc_qdu1000_gdscs,
> +	.num_gdscs = ARRAY_SIZE(gcc_qdu1000_gdscs),
>   };
>   
>   static const struct of_device_id gcc_qdu1000_match_table[] = {
>   	{ .compatible = "qcom,qdu1000-gcc" },
> +	{ .compatible = "qcom,qdu1000-gcc-v2" },

What is the actual hardware version being shipped in the end-user 
devices? Generally we do support only the latest hw revision. If you 
want to support v1 for some reason, please invert the logic here:
make "qcom,qdu1000-gcc" be the latest and grates and provide a reason 
for supporting v1 (via "qcom,qdu1000-gcc-v1").

>   	{ }
>   };
>   MODULE_DEVICE_TABLE(of, gcc_qdu1000_match_table);
> @@ -2617,6 +2669,12 @@ static int gcc_qdu1000_probe(struct platform_device *pdev)
>   	/* Update FORCE_MEM_CORE_ON for gcc_pcie_0_mstr_axi_clk */
>   	regmap_update_bits(regmap, 0x9d024, BIT(14), BIT(14));
>   
> +	if (of_device_is_compatible(pdev->dev.of_node, "qcom,qdu1000-gcc-v2")) {
> +		gcc_qdu1000_clocks[GCC_DDRSS_ECPRI_GSI_CLK] = &gcc_ddrss_ecpri_gsi_clk.clkr;
> +		gcc_pcie_0_clkref_en.halt_check = BRANCH_HALT_DELAY;
> +		gcc_usb2_clkref_en.halt_check = BRANCH_HALT_DELAY;
> +	}
> +
>   	ret = qcom_cc_register_rcg_dfs(regmap, gcc_dfs_clocks,
>   				       ARRAY_SIZE(gcc_dfs_clocks));
>   	if (ret)

--
With best wishes
Dmitry