[PATCH v3 8/9] clocks: qcom: Add clock driver for QCS404 SoC

Sumit Garg sumit.garg at linaro.org
Tue Jul 12 09:12:11 CEST 2022


Currently this clock driver initializes clocks for UART and eMMC. Along
with this import "qcom,gcc-qcs404.h" header from Linux mainline to
support DT bindings.

Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
---
 arch/arm/mach-snapdragon/clock-qcs404.c       |  79 ++++++++
 arch/arm/mach-snapdragon/clock-snapdragon.c   |   1 +
 .../include/mach/sysmap-qcs404.h              |  40 ++++
 include/dt-bindings/clock/qcom,gcc-qcs404.h   | 180 ++++++++++++++++++
 4 files changed, 300 insertions(+)
 create mode 100644 arch/arm/mach-snapdragon/clock-qcs404.c
 create mode 100644 arch/arm/mach-snapdragon/include/mach/sysmap-qcs404.h
 create mode 100644 include/dt-bindings/clock/qcom,gcc-qcs404.h

diff --git a/arch/arm/mach-snapdragon/clock-qcs404.c b/arch/arm/mach-snapdragon/clock-qcs404.c
new file mode 100644
index 0000000000..bb8a6fe067
--- /dev/null
+++ b/arch/arm/mach-snapdragon/clock-qcs404.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Clock drivers for Qualcomm QCS404
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg at linaro.org>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+#include "clock-snapdragon.h"
+
+#include <dt-bindings/clock/qcom,gcc-qcs404.h>
+
+/* GPLL0 clock control registers */
+#define GPLL0_STATUS_ACTIVE BIT(31)
+
+static struct vote_clk gcc_blsp1_ahb_clk = {
+	.cbcr_reg = BLSP1_AHB_CBCR,
+	.ena_vote = APCS_CLOCK_BRANCH_ENA_VOTE,
+	.vote_bit = BIT(10) | BIT(5) | BIT(4),
+};
+
+static const struct bcr_regs uart2_regs = {
+	.cfg_rcgr = BLSP1_UART2_APPS_CFG_RCGR,
+	.cmd_rcgr = BLSP1_UART2_APPS_CMD_RCGR,
+	.M = BLSP1_UART2_APPS_M,
+	.N = BLSP1_UART2_APPS_N,
+	.D = BLSP1_UART2_APPS_D,
+};
+
+static const struct bcr_regs sdc_regs = {
+	.cfg_rcgr = SDCC_CFG_RCGR(1),
+	.cmd_rcgr = SDCC_CMD_RCGR(1),
+	.M = SDCC_M(1),
+	.N = SDCC_N(1),
+	.D = SDCC_D(1),
+};
+
+static struct pll_vote_clk gpll0_vote_clk = {
+	.status = GPLL0_STATUS,
+	.status_bit = GPLL0_STATUS_ACTIVE,
+	.ena_vote = APCS_GPLL_ENA_VOTE,
+	.vote_bit = BIT(0),
+};
+
+ulong msm_set_rate(struct clk *clk, ulong rate)
+{
+	struct msm_clk_priv *priv = dev_get_priv(clk->dev);
+
+	switch (clk->id) {
+	case GCC_BLSP1_UART2_APPS_CLK:
+		/* UART: 115200 */
+		clk_rcg_set_rate_mnd(priv->base, &uart2_regs, 0, 12, 125,
+				     CFG_CLK_SRC_CXO);
+		clk_enable_cbc(priv->base + BLSP1_UART2_APPS_CBCR);
+		break;
+	case GCC_BLSP1_AHB_CLK:
+		clk_enable_vote_clk(priv->base, &gcc_blsp1_ahb_clk);
+		break;
+	case GCC_SDCC1_APPS_CLK:
+		/* SDCC1: 200MHz */
+		clk_rcg_set_rate_mnd(priv->base, &sdc_regs, 4, 0, 0,
+				     CFG_CLK_SRC_GPLL0);
+		clk_enable_gpll0(priv->base, &gpll0_vote_clk);
+		clk_enable_cbc(priv->base + SDCC_APPS_CBCR(1));
+		break;
+	case GCC_SDCC1_AHB_CLK:
+		clk_enable_cbc(priv->base + SDCC_AHB_CBCR(1));
+		break;
+	default:
+		return 0;
+	}
+
+	return 0;
+}
diff --git a/arch/arm/mach-snapdragon/clock-snapdragon.c b/arch/arm/mach-snapdragon/clock-snapdragon.c
index 3deb08ac4a..5652d2fa36 100644
--- a/arch/arm/mach-snapdragon/clock-snapdragon.c
+++ b/arch/arm/mach-snapdragon/clock-snapdragon.c
@@ -136,6 +136,7 @@ static const struct udevice_id msm_clk_ids[] = {
 	{ .compatible = "qcom,gcc-msm8996" },
 	{ .compatible = "qcom,gcc-apq8096" },
 	{ .compatible = "qcom,gcc-sdm845" },
+	{ .compatible = "qcom,gcc-qcs404" },
 	{ }
 };
 
diff --git a/arch/arm/mach-snapdragon/include/mach/sysmap-qcs404.h b/arch/arm/mach-snapdragon/include/mach/sysmap-qcs404.h
new file mode 100644
index 0000000000..4dc96b9fbc
--- /dev/null
+++ b/arch/arm/mach-snapdragon/include/mach/sysmap-qcs404.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Qualcomm QCS404 sysmap
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg at linaro.org>
+ */
+#ifndef _MACH_SYSMAP_QCS404_H
+#define _MACH_SYSMAP_QCS404_H
+
+#define GICD_BASE			(0x0b000000)
+#define GICC_BASE			(0x0b002000)
+
+/* Clocks: (from CLK_CTL_BASE)  */
+#define GPLL0_STATUS			(0x21000)
+#define APCS_GPLL_ENA_VOTE		(0x45000)
+#define APCS_CLOCK_BRANCH_ENA_VOTE	(0x45004)
+
+/* BLSP1 AHB clock (root clock for BLSP) */
+#define BLSP1_AHB_CBCR			0x1008
+
+/* Uart clock control registers */
+#define BLSP1_UART2_BCR			(0x3028)
+#define BLSP1_UART2_APPS_CBCR		(0x302C)
+#define BLSP1_UART2_APPS_CMD_RCGR	(0x3034)
+#define BLSP1_UART2_APPS_CFG_RCGR	(0x3038)
+#define BLSP1_UART2_APPS_M		(0x303C)
+#define BLSP1_UART2_APPS_N		(0x3040)
+#define BLSP1_UART2_APPS_D		(0x3044)
+
+/* SD controller clock control registers */
+#define SDCC_BCR(n)			(((n) * 0x1000) + 0x41000)
+#define SDCC_CMD_RCGR(n)		(((n) * 0x1000) + 0x41004)
+#define SDCC_CFG_RCGR(n)		(((n) * 0x1000) + 0x41008)
+#define SDCC_M(n)			(((n) * 0x1000) + 0x4100C)
+#define SDCC_N(n)			(((n) * 0x1000) + 0x41010)
+#define SDCC_D(n)			(((n) * 0x1000) + 0x41014)
+#define SDCC_APPS_CBCR(n)		(((n) * 0x1000) + 0x41018)
+#define SDCC_AHB_CBCR(n)		(((n) * 0x1000) + 0x4101C)
+
+#endif
diff --git a/include/dt-bindings/clock/qcom,gcc-qcs404.h b/include/dt-bindings/clock/qcom,gcc-qcs404.h
new file mode 100644
index 0000000000..bc30515433
--- /dev/null
+++ b/include/dt-bindings/clock/qcom,gcc-qcs404.h
@@ -0,0 +1,180 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_CLK_QCOM_GCC_QCS404_H
+#define _DT_BINDINGS_CLK_QCOM_GCC_QCS404_H
+
+#define GCC_APSS_AHB_CLK_SRC				0
+#define GCC_BLSP1_QUP0_I2C_APPS_CLK_SRC			1
+#define GCC_BLSP1_QUP0_SPI_APPS_CLK_SRC			2
+#define GCC_BLSP1_QUP1_I2C_APPS_CLK_SRC			3
+#define GCC_BLSP1_QUP1_SPI_APPS_CLK_SRC			4
+#define GCC_BLSP1_QUP2_I2C_APPS_CLK_SRC			5
+#define GCC_BLSP1_QUP2_SPI_APPS_CLK_SRC			6
+#define GCC_BLSP1_QUP3_I2C_APPS_CLK_SRC			7
+#define GCC_BLSP1_QUP3_SPI_APPS_CLK_SRC			8
+#define GCC_BLSP1_QUP4_I2C_APPS_CLK_SRC			9
+#define GCC_BLSP1_QUP4_SPI_APPS_CLK_SRC			10
+#define GCC_BLSP1_UART0_APPS_CLK_SRC			11
+#define GCC_BLSP1_UART1_APPS_CLK_SRC			12
+#define GCC_BLSP1_UART2_APPS_CLK_SRC			13
+#define GCC_BLSP1_UART3_APPS_CLK_SRC			14
+#define GCC_BLSP2_QUP0_I2C_APPS_CLK_SRC			15
+#define GCC_BLSP2_QUP0_SPI_APPS_CLK_SRC			16
+#define GCC_BLSP2_UART0_APPS_CLK_SRC			17
+#define GCC_BYTE0_CLK_SRC				18
+#define GCC_EMAC_CLK_SRC				19
+#define GCC_EMAC_PTP_CLK_SRC				20
+#define GCC_ESC0_CLK_SRC				21
+#define GCC_APSS_AHB_CLK				22
+#define GCC_APSS_AXI_CLK				23
+#define GCC_BIMC_APSS_AXI_CLK				24
+#define GCC_BIMC_GFX_CLK				25
+#define GCC_BIMC_MDSS_CLK				26
+#define GCC_BLSP1_AHB_CLK				27
+#define GCC_BLSP1_QUP0_I2C_APPS_CLK			28
+#define GCC_BLSP1_QUP0_SPI_APPS_CLK			29
+#define GCC_BLSP1_QUP1_I2C_APPS_CLK			30
+#define GCC_BLSP1_QUP1_SPI_APPS_CLK			31
+#define GCC_BLSP1_QUP2_I2C_APPS_CLK			32
+#define GCC_BLSP1_QUP2_SPI_APPS_CLK			33
+#define GCC_BLSP1_QUP3_I2C_APPS_CLK			34
+#define GCC_BLSP1_QUP3_SPI_APPS_CLK			35
+#define GCC_BLSP1_QUP4_I2C_APPS_CLK			36
+#define GCC_BLSP1_QUP4_SPI_APPS_CLK			37
+#define GCC_BLSP1_UART0_APPS_CLK			38
+#define GCC_BLSP1_UART1_APPS_CLK			39
+#define GCC_BLSP1_UART2_APPS_CLK			40
+#define GCC_BLSP1_UART3_APPS_CLK			41
+#define GCC_BLSP2_AHB_CLK				42
+#define GCC_BLSP2_QUP0_I2C_APPS_CLK			43
+#define GCC_BLSP2_QUP0_SPI_APPS_CLK			44
+#define GCC_BLSP2_UART0_APPS_CLK			45
+#define GCC_BOOT_ROM_AHB_CLK				46
+#define GCC_DCC_CLK					47
+#define GCC_GENI_IR_H_CLK				48
+#define GCC_ETH_AXI_CLK					49
+#define GCC_ETH_PTP_CLK					50
+#define GCC_ETH_RGMII_CLK				51
+#define GCC_ETH_SLAVE_AHB_CLK				52
+#define GCC_GENI_IR_S_CLK				53
+#define GCC_GP1_CLK					54
+#define GCC_GP2_CLK					55
+#define GCC_GP3_CLK					56
+#define GCC_MDSS_AHB_CLK				57
+#define GCC_MDSS_AXI_CLK				58
+#define GCC_MDSS_BYTE0_CLK				59
+#define GCC_MDSS_ESC0_CLK				60
+#define GCC_MDSS_HDMI_APP_CLK				61
+#define GCC_MDSS_HDMI_PCLK_CLK				62
+#define GCC_MDSS_MDP_CLK				63
+#define GCC_MDSS_PCLK0_CLK				64
+#define GCC_MDSS_VSYNC_CLK				65
+#define GCC_OXILI_AHB_CLK				66
+#define GCC_OXILI_GFX3D_CLK				67
+#define GCC_PCIE_0_AUX_CLK				68
+#define GCC_PCIE_0_CFG_AHB_CLK				69
+#define GCC_PCIE_0_MSTR_AXI_CLK				70
+#define GCC_PCIE_0_PIPE_CLK				71
+#define GCC_PCIE_0_SLV_AXI_CLK				72
+#define GCC_PCNOC_USB2_CLK				73
+#define GCC_PCNOC_USB3_CLK				74
+#define GCC_PDM2_CLK					75
+#define GCC_PDM_AHB_CLK					76
+#define GCC_VSYNC_CLK_SRC				77
+#define GCC_PRNG_AHB_CLK				78
+#define GCC_PWM0_XO512_CLK				79
+#define GCC_PWM1_XO512_CLK				80
+#define GCC_PWM2_XO512_CLK				81
+#define GCC_SDCC1_AHB_CLK				82
+#define GCC_SDCC1_APPS_CLK				83
+#define GCC_SDCC1_ICE_CORE_CLK				84
+#define GCC_SDCC2_AHB_CLK				85
+#define GCC_SDCC2_APPS_CLK				86
+#define GCC_SYS_NOC_USB3_CLK				87
+#define GCC_USB20_MOCK_UTMI_CLK				88
+#define GCC_USB2A_PHY_SLEEP_CLK				89
+#define GCC_USB30_MASTER_CLK				90
+#define GCC_USB30_MOCK_UTMI_CLK				91
+#define GCC_USB30_SLEEP_CLK				92
+#define GCC_USB3_PHY_AUX_CLK				93
+#define GCC_USB3_PHY_PIPE_CLK				94
+#define GCC_USB_HS_PHY_CFG_AHB_CLK			95
+#define GCC_USB_HS_SYSTEM_CLK				96
+#define GCC_GFX3D_CLK_SRC				97
+#define GCC_GP1_CLK_SRC					98
+#define GCC_GP2_CLK_SRC					99
+#define GCC_GP3_CLK_SRC					100
+#define GCC_GPLL0_OUT_MAIN				101
+#define GCC_GPLL1_OUT_MAIN				102
+#define GCC_GPLL3_OUT_MAIN				103
+#define GCC_GPLL4_OUT_MAIN				104
+#define GCC_HDMI_APP_CLK_SRC				105
+#define GCC_HDMI_PCLK_CLK_SRC				106
+#define GCC_MDP_CLK_SRC					107
+#define GCC_PCIE_0_AUX_CLK_SRC				108
+#define GCC_PCIE_0_PIPE_CLK_SRC				109
+#define GCC_PCLK0_CLK_SRC				110
+#define GCC_PDM2_CLK_SRC				111
+#define GCC_SDCC1_APPS_CLK_SRC				112
+#define GCC_SDCC1_ICE_CORE_CLK_SRC			113
+#define GCC_SDCC2_APPS_CLK_SRC				114
+#define GCC_USB20_MOCK_UTMI_CLK_SRC			115
+#define GCC_USB30_MASTER_CLK_SRC			116
+#define GCC_USB30_MOCK_UTMI_CLK_SRC			117
+#define GCC_USB3_PHY_AUX_CLK_SRC			118
+#define GCC_USB_HS_SYSTEM_CLK_SRC			119
+#define GCC_GPLL0_AO_CLK_SRC				120
+#define GCC_USB_HS_INACTIVITY_TIMERS_CLK		122
+#define GCC_GPLL0_AO_OUT_MAIN				123
+#define GCC_GPLL0_SLEEP_CLK_SRC				124
+#define GCC_GPLL6					125
+#define GCC_GPLL6_OUT_AUX				126
+#define GCC_MDSS_MDP_VOTE_CLK				127
+#define GCC_MDSS_ROTATOR_VOTE_CLK			128
+#define GCC_BIMC_GPU_CLK				129
+#define GCC_GTCU_AHB_CLK				130
+#define GCC_GFX_TCU_CLK					131
+#define GCC_GFX_TBU_CLK					132
+#define GCC_SMMU_CFG_CLK				133
+#define GCC_APSS_TCU_CLK				134
+#define GCC_CRYPTO_AHB_CLK				135
+#define GCC_CRYPTO_AXI_CLK				136
+#define GCC_CRYPTO_CLK					137
+#define GCC_MDP_TBU_CLK					138
+#define GCC_QDSS_DAP_CLK				139
+#define GCC_DCC_XO_CLK					140
+#define GCC_WCSS_Q6_AHB_CLK				141
+#define GCC_WCSS_Q6_AXIM_CLK				142
+#define GCC_CDSP_CFG_AHB_CLK				143
+#define GCC_BIMC_CDSP_CLK				144
+#define GCC_CDSP_TBU_CLK				145
+#define GCC_CDSP_BIMC_CLK_SRC				146
+
+#define GCC_GENI_IR_BCR					0
+#define GCC_USB_HS_BCR					1
+#define GCC_USB2_HS_PHY_ONLY_BCR			2
+#define GCC_QUSB2_PHY_BCR				3
+#define GCC_USB_HS_PHY_CFG_AHB_BCR			4
+#define GCC_USB2A_PHY_BCR				5
+#define GCC_USB3_PHY_BCR				6
+#define GCC_USB_30_BCR					7
+#define GCC_USB3PHY_PHY_BCR				8
+#define GCC_PCIE_0_BCR					9
+#define GCC_PCIE_0_PHY_BCR				10
+#define GCC_PCIE_0_LINK_DOWN_BCR			11
+#define GCC_PCIEPHY_0_PHY_BCR				12
+#define GCC_EMAC_BCR					13
+#define GCC_CDSP_RESTART				14
+#define GCC_PCIE_0_AXI_MASTER_STICKY_ARES		15
+#define GCC_PCIE_0_AHB_ARES				16
+#define GCC_PCIE_0_AXI_SLAVE_ARES			17
+#define GCC_PCIE_0_AXI_MASTER_ARES			18
+#define GCC_PCIE_0_CORE_STICKY_ARES			19
+#define GCC_PCIE_0_SLEEP_ARES				20
+#define GCC_PCIE_0_PIPE_ARES				21
+#define GCC_WDSP_RESTART				22
+
+#endif
-- 
2.25.1



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