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clk/qcom: add initial clock driver for qcs9100

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Add initial set of clocks and resets for enabling U-Boot on QCS9100
based Ride platforms.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Link: https://lore.kernel.org/r/20250110050817.3819282-4-quic_varada@quicinc.com
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
This commit is contained in:
Varadarajan Narayanan 2025-01-10 10:38:14 +05:30 committed by Caleb Connolly
parent 5cc2d97367
commit b3c48d8f82
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GPG Key ID: 7930459FB9303217
3 changed files with 151 additions and 0 deletions
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8
drivers/clk/qcom/Kconfig
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@ -103,6 +103,14 @@ config CLK_QCOM_SC7280
on the Snapdragon SC7280 SoC. This driver supports the clocks
and resets exposed by the GCC hardware block.
config CLK_QCOM_SA8775P
bool "Qualcomm SA8775 GCC"
select CLK_QCOM
help
Say Y here to enable support for the Global Clock Controller
on the Snapdragon SA8775 SoC. This driver supports the clocks
and resets exposed by the GCC hardware block.
endmenu
endif

1
drivers/clk/qcom/Makefile
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@ -15,3 +15,4 @@ obj-$(CONFIG_CLK_QCOM_SM8150) += clock-sm8150.o
obj-$(CONFIG_CLK_QCOM_SM8250) += clock-sm8250.o
obj-$(CONFIG_CLK_QCOM_SM8550) += clock-sm8550.o
obj-$(CONFIG_CLK_QCOM_SM8650) += clock-sm8650.o
obj-$(CONFIG_CLK_QCOM_SA8775P) += clock-sa8775p.o

142
drivers/clk/qcom/clock-sa8775p.c Normal file
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@ -0,0 +1,142 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Clock drivers for Qualcomm sa8775p
*
* (C) Copyright 2024 Linaro Ltd.
*/
#include <linux/types.h>
#include <clk-uclass.h>
#include <dm.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <linux/bug.h>
#include <linux/bitops.h>
#include <dt-bindings/clock/qcom,sa8775p-gcc.h>
#include "clock-qcom.h"
#define USB30_PRIM_MOCK_UTMI_CLK_CMD_RCGR 0xf038
#define USB30_PRIM_MASTER_CLK_CMD_RCGR 0xf020
static ulong sa8775p_set_rate(struct clk *clk, ulong rate)
{
struct msm_clk_priv *priv = dev_get_priv(clk->dev);
if (clk->id < priv->data->num_clks)
debug("%s: %s, requested rate=%ld\n", __func__,
priv->data->clks[clk->id].name, rate);
switch (clk->id) {
case GCC_USB30_PRIM_MOCK_UTMI_CLK:
WARN(rate != 19200000, "Unexpected rate for USB30_PRIM_MOCK_UTMI_CLK: %lu\n", rate);
clk_rcg_set_rate(priv->base, USB30_PRIM_MOCK_UTMI_CLK_CMD_RCGR, 0, CFG_CLK_SRC_CXO);
return rate;
case GCC_USB30_PRIM_MASTER_CLK:
WARN(rate != 200000000, "Unexpected rate for USB30_PRIM_MASTER_CLK: %lu\n", rate);
clk_rcg_set_rate_mnd(priv->base, USB30_PRIM_MASTER_CLK_CMD_RCGR,
1, 0, 0, CFG_CLK_SRC_GPLL0_ODD, 8);
clk_rcg_set_rate(priv->base, 0xf064, 0, 0);
return rate;
default:
return 0;
}
}
static const struct gate_clk sa8775p_clks[] = {
GATE_CLK(GCC_CFG_NOC_USB3_PRIM_AXI_CLK, 0x1b088, 1),
GATE_CLK(GCC_USB30_PRIM_MASTER_CLK, 0x1b018, 1),
GATE_CLK(GCC_AGGRE_USB3_PRIM_AXI_CLK, 0x1b084, 1),
GATE_CLK(GCC_USB30_PRIM_SLEEP_CLK, 0x1b020, 1),
GATE_CLK(GCC_USB30_PRIM_MOCK_UTMI_CLK, 0x1b024, 1),
GATE_CLK(GCC_USB3_PRIM_PHY_AUX_CLK, 0x1b05c, 1),
GATE_CLK(GCC_USB3_PRIM_PHY_COM_AUX_CLK, 0x1b060, 1),
};
static int sa8775p_enable(struct clk *clk)
{
struct msm_clk_priv *priv = dev_get_priv(clk->dev);
if (priv->data->num_clks < clk->id) {
debug("%s: unknown clk id %lu\n", __func__, clk->id);
return 0;
}
debug("%s: clk %ld: %s\n", __func__, clk->id, sa8775p_clks[clk->id].name);
switch (clk->id) {
case GCC_AGGRE_USB3_PRIM_AXI_CLK:
qcom_gate_clk_en(priv, GCC_USB30_PRIM_MASTER_CLK);
fallthrough;
case GCC_USB30_PRIM_MASTER_CLK:
qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_AUX_CLK);
qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_COM_AUX_CLK);
break;
}
qcom_gate_clk_en(priv, clk->id);
return 0;
}
static const struct qcom_reset_map sa8775p_gcc_resets[] = {
[GCC_CAMERA_BCR] = { 0x32000 },
[GCC_DISPLAY1_BCR] = { 0xC7000 },
[GCC_DISPLAY_BCR] = { 0x33000 },
[GCC_EMAC0_BCR] = { 0xB6000 },
[GCC_EMAC1_BCR] = { 0xB4000 },
[GCC_GPU_BCR] = { 0x7D000 },
[GCC_MMSS_BCR] = { 0x17000 },
[GCC_PCIE_0_BCR] = { 0xa9000 },
[GCC_PCIE_0_LINK_DOWN_BCR] = { 0xBF000 },
[GCC_PCIE_0_NOCSR_COM_PHY_BCR] = { 0xBF008 },
[GCC_PCIE_0_PHY_BCR] = { 0xAD144 },
[GCC_PCIE_0_PHY_NOCSR_COM_PHY_BCR] = { 0xBF00C },
[GCC_PCIE_1_BCR] = { 0x77000 },
[GCC_PCIE_1_LINK_DOWN_BCR] = { 0xAE084 },
[GCC_PCIE_1_NOCSR_COM_PHY_BCR] = { 0xAE090 },
[GCC_PCIE_1_PHY_BCR] = { 0xAE08C },
[GCC_PCIE_1_PHY_NOCSR_COM_PHY_BCR] = { 0xAE094 },
[GCC_PDM_BCR] = { 0x3F000 },
[GCC_QUPV3_WRAPPER_0_BCR] = { 0x23000 },
[GCC_QUPV3_WRAPPER_1_BCR] = { 0x24000 },
[GCC_QUPV3_WRAPPER_2_BCR] = { 0x2A000 },
[GCC_QUPV3_WRAPPER_3_BCR] = { 0xC4000 },
[GCC_SDCC1_BCR] = { 0x20000 },
[GCC_TSCSS_BCR] = { 0x21000 },
[GCC_UFS_CARD_BCR] = { 0x81000 },
[GCC_UFS_PHY_BCR] = { 0x83000 },
};
static const struct qcom_power_map sa8775p_gdscs[] = {
[UFS_PHY_GDSC] = { 0x83004 },
[USB30_PRIM_GDSC] = { 0x1B004 },
};
static struct msm_clk_data sa8775_gcc_data = {
.resets = sa8775p_gcc_resets,
.num_resets = ARRAY_SIZE(sa8775p_gcc_resets),
.clks = sa8775p_clks,
.num_clks = ARRAY_SIZE(sa8775p_clks),
.power_domains = sa8775p_gdscs,
.num_power_domains = ARRAY_SIZE(sa8775p_gdscs),
.enable = sa8775p_enable,
.set_rate = sa8775p_set_rate,
};
static const struct udevice_id gcc_sa8775p_of_match[] = {
{
.compatible = "qcom,sa8775p-gcc",
.data = (ulong)&sa8775_gcc_data,
},
{ }
};
U_BOOT_DRIVER(gcc_sa8775p) = {
.name = "gcc_sa8775p",
.id = UCLASS_NOP,
.of_match = gcc_sa8775p_of_match,
.bind = qcom_cc_bind,
.flags = DM_FLAG_PRE_RELOC | DM_FLAG_DEFAULT_PD_CTRL_OFF,
};