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path: root/drivers/clk/clk-en7523.c
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Diffstat (limited to 'drivers/clk/clk-en7523.c')
-rw-r--r--drivers/clk/clk-en7523.c549
1 files changed, 433 insertions, 116 deletions
diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c
index ccc394692671..08cc8e5acf43 100644
--- a/drivers/clk/clk-en7523.c
+++ b/drivers/clk/clk-en7523.c
@@ -3,9 +3,16 @@
#include <linux/delay.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
+#include <linux/mfd/syscon.h>
#include <linux/platform_device.h>
#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
#include <dt-bindings/clock/en7523-clk.h>
+#include <dt-bindings/reset/airoha,en7523-reset.h>
+#include <dt-bindings/reset/airoha,en7581-reset.h>
+
+#define RST_NR_PER_BANK 32
#define REG_PCI_CONTROL 0x88
#define REG_PCI_CONTROL_PERSTOUT BIT(29)
@@ -27,18 +34,14 @@
#define REG_RESET_CONTROL_PCIE1 BIT(27)
#define REG_RESET_CONTROL_PCIE2 BIT(26)
/* EN7581 */
-#define REG_PCIE0_MEM 0x00
-#define REG_PCIE0_MEM_MASK 0x04
-#define REG_PCIE1_MEM 0x08
-#define REG_PCIE1_MEM_MASK 0x0c
-#define REG_PCIE2_MEM 0x10
-#define REG_PCIE2_MEM_MASK 0x14
-#define REG_PCIE_RESET_OPEN_DRAIN 0x018c
-#define REG_PCIE_RESET_OPEN_DRAIN_MASK GENMASK(2, 0)
#define REG_NP_SCU_PCIC 0x88
#define REG_NP_SCU_SSTR 0x9c
#define REG_PCIE_XSI0_SEL_MASK GENMASK(14, 13)
#define REG_PCIE_XSI1_SEL_MASK GENMASK(12, 11)
+#define REG_CRYPTO_CLKSRC2 0x20c
+
+#define REG_RST_CTRL2 0x830
+#define REG_RST_CTRL1 0x834
struct en_clk_desc {
int id;
@@ -57,6 +60,7 @@ struct en_clk_desc {
u8 div_shift;
u16 div_val0;
u8 div_step;
+ u8 div_offset;
};
struct en_clk_gate {
@@ -64,10 +68,18 @@ struct en_clk_gate {
struct clk_hw hw;
};
+struct en_rst_data {
+ const u16 *bank_ofs;
+ const u16 *idx_map;
+ void __iomem *base;
+ struct reset_controller_dev rcdev;
+};
+
struct en_clk_soc_data {
+ u32 num_clocks;
const struct clk_ops pcie_ops;
- int (*hw_init)(struct platform_device *pdev, void __iomem *base,
- void __iomem *np_base);
+ int (*hw_init)(struct platform_device *pdev,
+ struct clk_hw_onecell_data *clk_data);
};
static const u32 gsw_base[] = { 400000000, 500000000 };
@@ -75,6 +87,12 @@ static const u32 emi_base[] = { 333000000, 400000000 };
static const u32 bus_base[] = { 500000000, 540000000 };
static const u32 slic_base[] = { 100000000, 3125000 };
static const u32 npu_base[] = { 333000000, 400000000, 500000000 };
+/* EN7581 */
+static const u32 emi7581_base[] = { 540000000, 480000000, 400000000, 300000000 };
+static const u32 bus7581_base[] = { 600000000, 540000000 };
+static const u32 npu7581_base[] = { 800000000, 750000000, 720000000, 600000000 };
+static const u32 crypto_base[] = { 540000000, 480000000 };
+static const u32 emmc7581_base[] = { 200000000, 150000000 };
static const struct en_clk_desc en7523_base_clks[] = {
{
@@ -90,6 +108,7 @@ static const struct en_clk_desc en7523_base_clks[] = {
.div_bits = 3,
.div_shift = 0,
.div_step = 1,
+ .div_offset = 1,
}, {
.id = EN7523_CLK_EMI,
.name = "emi",
@@ -103,6 +122,7 @@ static const struct en_clk_desc en7523_base_clks[] = {
.div_bits = 3,
.div_shift = 0,
.div_step = 1,
+ .div_offset = 1,
}, {
.id = EN7523_CLK_BUS,
.name = "bus",
@@ -116,6 +136,7 @@ static const struct en_clk_desc en7523_base_clks[] = {
.div_bits = 3,
.div_shift = 0,
.div_step = 1,
+ .div_offset = 1,
}, {
.id = EN7523_CLK_SLIC,
.name = "slic",
@@ -156,27 +177,242 @@ static const struct en_clk_desc en7523_base_clks[] = {
.div_bits = 3,
.div_shift = 0,
.div_step = 1,
+ .div_offset = 1,
}, {
.id = EN7523_CLK_CRYPTO,
.name = "crypto",
.base_reg = REG_CRYPTO_CLKSRC,
.base_bits = 1,
- .base_shift = 8,
+ .base_shift = 0,
.base_values = emi_base,
.n_base_values = ARRAY_SIZE(emi_base),
}
};
-static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i)
-{
- const struct en_clk_desc *desc = &en7523_base_clks[i];
- u32 val;
+static const struct en_clk_desc en7581_base_clks[] = {
+ {
+ .id = EN7523_CLK_GSW,
+ .name = "gsw",
+
+ .base_reg = REG_GSW_CLK_DIV_SEL,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = gsw_base,
+ .n_base_values = ARRAY_SIZE(gsw_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ .div_offset = 1,
+ }, {
+ .id = EN7523_CLK_EMI,
+ .name = "emi",
+
+ .base_reg = REG_EMI_CLK_DIV_SEL,
+ .base_bits = 2,
+ .base_shift = 8,
+ .base_values = emi7581_base,
+ .n_base_values = ARRAY_SIZE(emi7581_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ .div_offset = 1,
+ }, {
+ .id = EN7523_CLK_BUS,
+ .name = "bus",
+
+ .base_reg = REG_BUS_CLK_DIV_SEL,
+ .base_bits = 1,
+ .base_shift = 8,
+ .base_values = bus7581_base,
+ .n_base_values = ARRAY_SIZE(bus7581_base),
+
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ .div_offset = 1,
+ }, {
+ .id = EN7523_CLK_SLIC,
+ .name = "slic",
+
+ .base_reg = REG_SPI_CLK_FREQ_SEL,
+ .base_bits = 1,
+ .base_shift = 0,
+ .base_values = slic_base,
+ .n_base_values = ARRAY_SIZE(slic_base),
+
+ .div_reg = REG_SPI_CLK_DIV_SEL,
+ .div_bits = 5,
+ .div_shift = 24,
+ .div_val0 = 20,
+ .div_step = 2,
+ }, {
+ .id = EN7523_CLK_SPI,
+ .name = "spi",
+
+ .base_reg = REG_SPI_CLK_DIV_SEL,
+
+ .base_value = 400000000,
+
+ .div_bits = 5,
+ .div_shift = 8,
+ .div_val0 = 40,
+ .div_step = 2,
+ }, {
+ .id = EN7523_CLK_NPU,
+ .name = "npu",
+
+ .base_reg = REG_NPU_CLK_DIV_SEL,
+ .base_bits = 2,
+ .base_shift = 8,
+ .base_values = npu7581_base,
+ .n_base_values = ARRAY_SIZE(npu7581_base),
+ .div_bits = 3,
+ .div_shift = 0,
+ .div_step = 1,
+ .div_offset = 1,
+ }, {
+ .id = EN7523_CLK_CRYPTO,
+ .name = "crypto",
+
+ .base_reg = REG_CRYPTO_CLKSRC2,
+ .base_bits = 1,
+ .base_shift = 0,
+ .base_values = crypto_base,
+ .n_base_values = ARRAY_SIZE(crypto_base),
+ }, {
+ .id = EN7581_CLK_EMMC,
+ .name = "emmc",
+
+ .base_reg = REG_CRYPTO_CLKSRC2,
+ .base_bits = 1,
+ .base_shift = 12,
+ .base_values = emmc7581_base,
+ .n_base_values = ARRAY_SIZE(emmc7581_base),
+ }
+};
+
+static const u16 en7581_rst_ofs[] = {
+ REG_RST_CTRL2,
+ REG_RST_CTRL1,
+};
+
+static const u16 en7523_rst_map[] = {
+ /* RST_CTRL2 */
+ [EN7523_XPON_PHY_RST] = 0,
+ [EN7523_XSI_MAC_RST] = 7,
+ [EN7523_XSI_PHY_RST] = 8,
+ [EN7523_NPU_RST] = 9,
+ [EN7523_I2S_RST] = 10,
+ [EN7523_TRNG_RST] = 11,
+ [EN7523_TRNG_MSTART_RST] = 12,
+ [EN7523_DUAL_HSI0_RST] = 13,
+ [EN7523_DUAL_HSI1_RST] = 14,
+ [EN7523_HSI_RST] = 15,
+ [EN7523_DUAL_HSI0_MAC_RST] = 16,
+ [EN7523_DUAL_HSI1_MAC_RST] = 17,
+ [EN7523_HSI_MAC_RST] = 18,
+ [EN7523_WDMA_RST] = 19,
+ [EN7523_WOE0_RST] = 20,
+ [EN7523_WOE1_RST] = 21,
+ [EN7523_HSDMA_RST] = 22,
+ [EN7523_I2C2RBUS_RST] = 23,
+ [EN7523_TDMA_RST] = 24,
+ /* RST_CTRL1 */
+ [EN7523_PCM1_ZSI_ISI_RST] = RST_NR_PER_BANK + 0,
+ [EN7523_FE_PDMA_RST] = RST_NR_PER_BANK + 1,
+ [EN7523_FE_QDMA_RST] = RST_NR_PER_BANK + 2,
+ [EN7523_PCM_SPIWP_RST] = RST_NR_PER_BANK + 4,
+ [EN7523_CRYPTO_RST] = RST_NR_PER_BANK + 6,
+ [EN7523_TIMER_RST] = RST_NR_PER_BANK + 8,
+ [EN7523_PCM1_RST] = RST_NR_PER_BANK + 11,
+ [EN7523_UART_RST] = RST_NR_PER_BANK + 12,
+ [EN7523_GPIO_RST] = RST_NR_PER_BANK + 13,
+ [EN7523_GDMA_RST] = RST_NR_PER_BANK + 14,
+ [EN7523_I2C_MASTER_RST] = RST_NR_PER_BANK + 16,
+ [EN7523_PCM2_ZSI_ISI_RST] = RST_NR_PER_BANK + 17,
+ [EN7523_SFC_RST] = RST_NR_PER_BANK + 18,
+ [EN7523_UART2_RST] = RST_NR_PER_BANK + 19,
+ [EN7523_GDMP_RST] = RST_NR_PER_BANK + 20,
+ [EN7523_FE_RST] = RST_NR_PER_BANK + 21,
+ [EN7523_USB_HOST_P0_RST] = RST_NR_PER_BANK + 22,
+ [EN7523_GSW_RST] = RST_NR_PER_BANK + 23,
+ [EN7523_SFC2_PCM_RST] = RST_NR_PER_BANK + 25,
+ [EN7523_PCIE0_RST] = RST_NR_PER_BANK + 26,
+ [EN7523_PCIE1_RST] = RST_NR_PER_BANK + 27,
+ [EN7523_PCIE_HB_RST] = RST_NR_PER_BANK + 29,
+ [EN7523_XPON_MAC_RST] = RST_NR_PER_BANK + 31,
+};
+
+static const u16 en7581_rst_map[] = {
+ /* RST_CTRL2 */
+ [EN7581_XPON_PHY_RST] = 0,
+ [EN7581_CPU_TIMER2_RST] = 2,
+ [EN7581_HSUART_RST] = 3,
+ [EN7581_UART4_RST] = 4,
+ [EN7581_UART5_RST] = 5,
+ [EN7581_I2C2_RST] = 6,
+ [EN7581_XSI_MAC_RST] = 7,
+ [EN7581_XSI_PHY_RST] = 8,
+ [EN7581_NPU_RST] = 9,
+ [EN7581_I2S_RST] = 10,
+ [EN7581_TRNG_RST] = 11,
+ [EN7581_TRNG_MSTART_RST] = 12,
+ [EN7581_DUAL_HSI0_RST] = 13,
+ [EN7581_DUAL_HSI1_RST] = 14,
+ [EN7581_HSI_RST] = 15,
+ [EN7581_DUAL_HSI0_MAC_RST] = 16,
+ [EN7581_DUAL_HSI1_MAC_RST] = 17,
+ [EN7581_HSI_MAC_RST] = 18,
+ [EN7581_WDMA_RST] = 19,
+ [EN7581_WOE0_RST] = 20,
+ [EN7581_WOE1_RST] = 21,
+ [EN7581_HSDMA_RST] = 22,
+ [EN7581_TDMA_RST] = 24,
+ [EN7581_EMMC_RST] = 25,
+ [EN7581_SOE_RST] = 26,
+ [EN7581_PCIE2_RST] = 27,
+ [EN7581_XFP_MAC_RST] = 28,
+ [EN7581_USB_HOST_P1_RST] = 29,
+ [EN7581_USB_HOST_P1_U3_PHY_RST] = 30,
+ /* RST_CTRL1 */
+ [EN7581_PCM1_ZSI_ISI_RST] = RST_NR_PER_BANK + 0,
+ [EN7581_FE_PDMA_RST] = RST_NR_PER_BANK + 1,
+ [EN7581_FE_QDMA_RST] = RST_NR_PER_BANK + 2,
+ [EN7581_PCM_SPIWP_RST] = RST_NR_PER_BANK + 4,
+ [EN7581_CRYPTO_RST] = RST_NR_PER_BANK + 6,
+ [EN7581_TIMER_RST] = RST_NR_PER_BANK + 8,
+ [EN7581_PCM1_RST] = RST_NR_PER_BANK + 11,
+ [EN7581_UART_RST] = RST_NR_PER_BANK + 12,
+ [EN7581_GPIO_RST] = RST_NR_PER_BANK + 13,
+ [EN7581_GDMA_RST] = RST_NR_PER_BANK + 14,
+ [EN7581_I2C_MASTER_RST] = RST_NR_PER_BANK + 16,
+ [EN7581_PCM2_ZSI_ISI_RST] = RST_NR_PER_BANK + 17,
+ [EN7581_SFC_RST] = RST_NR_PER_BANK + 18,
+ [EN7581_UART2_RST] = RST_NR_PER_BANK + 19,
+ [EN7581_GDMP_RST] = RST_NR_PER_BANK + 20,
+ [EN7581_FE_RST] = RST_NR_PER_BANK + 21,
+ [EN7581_USB_HOST_P0_RST] = RST_NR_PER_BANK + 22,
+ [EN7581_GSW_RST] = RST_NR_PER_BANK + 23,
+ [EN7581_SFC2_PCM_RST] = RST_NR_PER_BANK + 25,
+ [EN7581_PCIE0_RST] = RST_NR_PER_BANK + 26,
+ [EN7581_PCIE1_RST] = RST_NR_PER_BANK + 27,
+ [EN7581_CPU_TIMER_RST] = RST_NR_PER_BANK + 28,
+ [EN7581_PCIE_HB_RST] = RST_NR_PER_BANK + 29,
+ [EN7581_XPON_MAC_RST] = RST_NR_PER_BANK + 31,
+};
+
+static int en7581_reset_register(struct device *dev, void __iomem *base,
+ const u16 *rst_map, int nr_resets);
+
+static u32 en7523_get_base_rate(const struct en_clk_desc *desc, u32 val)
+{
if (!desc->base_bits)
return desc->base_value;
- val = readl(base + desc->base_reg);
val >>= desc->base_shift;
val &= (1 << desc->base_bits) - 1;
@@ -186,23 +422,18 @@ static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i)
return desc->base_values[val];
}
-static u32 en7523_get_div(void __iomem *base, int i)
+static u32 en7523_get_div(const struct en_clk_desc *desc, u32 val)
{
- const struct en_clk_desc *desc = &en7523_base_clks[i];
- u32 reg, val;
-
if (!desc->div_bits)
return 1;
- reg = desc->div_reg ? desc->div_reg : desc->base_reg;
- val = readl(base + reg);
val >>= desc->div_shift;
val &= (1 << desc->div_bits) - 1;
if (!val && desc->div_val0)
return desc->div_val0;
- return (val + 1) * desc->div_step;
+ return (val + desc->div_offset) * desc->div_step;
}
static int en7523_pci_is_enabled(struct clk_hw *hw)
@@ -279,9 +510,8 @@ static struct clk_hw *en7523_register_pcie_clk(struct device *dev,
cg->base = np_base;
cg->hw.init = &init;
- if (init.ops->disable)
- init.ops->disable(&cg->hw);
- init.ops->unprepare(&cg->hw);
+ if (init.ops->unprepare)
+ init.ops->unprepare(&cg->hw);
if (clk_hw_register(dev, &cg->hw))
return NULL;
@@ -299,23 +529,6 @@ static int en7581_pci_is_enabled(struct clk_hw *hw)
return (val & mask) == mask;
}
-static int en7581_pci_prepare(struct clk_hw *hw)
-{
- struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
- void __iomem *np_base = cg->base;
- u32 val, mask;
-
- mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
- REG_RESET_CONTROL_PCIEHB;
- val = readl(np_base + REG_RESET_CONTROL1);
- writel(val & ~mask, np_base + REG_RESET_CONTROL1);
- val = readl(np_base + REG_RESET_CONTROL2);
- writel(val & ~REG_RESET2_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2);
- usleep_range(5000, 10000);
-
- return 0;
-}
-
static int en7581_pci_enable(struct clk_hw *hw)
{
struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
@@ -327,28 +540,10 @@ static int en7581_pci_enable(struct clk_hw *hw)
REG_PCI_CONTROL_PERSTOUT;
val = readl(np_base + REG_PCI_CONTROL);
writel(val | mask, np_base + REG_PCI_CONTROL);
- msleep(250);
return 0;
}
-static void en7581_pci_unprepare(struct clk_hw *hw)
-{
- struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
- void __iomem *np_base = cg->base;
- u32 val, mask;
-
- mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 |
- REG_RESET_CONTROL_PCIEHB;
- val = readl(np_base + REG_RESET_CONTROL1);
- writel(val | mask, np_base + REG_RESET_CONTROL1);
- mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2;
- writel(val | mask, np_base + REG_RESET_CONTROL1);
- val = readl(np_base + REG_RESET_CONTROL2);
- writel(val | REG_RESET_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2);
- msleep(100);
-}
-
static void en7581_pci_disable(struct clk_hw *hw)
{
struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw);
@@ -363,37 +558,6 @@ static void en7581_pci_disable(struct clk_hw *hw)
usleep_range(1000, 2000);
}
-static int en7581_clk_hw_init(struct platform_device *pdev,
- void __iomem *base,
- void __iomem *np_base)
-{
- void __iomem *pb_base;
- u32 val;
-
- pb_base = devm_platform_ioremap_resource(pdev, 2);
- if (IS_ERR(pb_base))
- return PTR_ERR(pb_base);
-
- val = readl(np_base + REG_NP_SCU_SSTR);
- val &= ~(REG_PCIE_XSI0_SEL_MASK | REG_PCIE_XSI1_SEL_MASK);
- writel(val, np_base + REG_NP_SCU_SSTR);
- val = readl(np_base + REG_NP_SCU_PCIC);
- writel(val | 3, np_base + REG_NP_SCU_PCIC);
-
- writel(0x20000000, pb_base + REG_PCIE0_MEM);
- writel(0xfc000000, pb_base + REG_PCIE0_MEM_MASK);
- writel(0x24000000, pb_base + REG_PCIE1_MEM);
- writel(0xfc000000, pb_base + REG_PCIE1_MEM_MASK);
- writel(0x28000000, pb_base + REG_PCIE2_MEM);
- writel(0xfc000000, pb_base + REG_PCIE2_MEM_MASK);
-
- val = readl(base + REG_PCIE_RESET_OPEN_DRAIN);
- writel(val | REG_PCIE_RESET_OPEN_DRAIN_MASK,
- base + REG_PCIE_RESET_OPEN_DRAIN);
-
- return 0;
-}
-
static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_data *clk_data,
void __iomem *base, void __iomem *np_base)
{
@@ -403,9 +567,12 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat
for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) {
const struct en_clk_desc *desc = &en7523_base_clks[i];
+ u32 reg = desc->div_reg ? desc->div_reg : desc->base_reg;
+ u32 val = readl(base + desc->base_reg);
- rate = en7523_get_base_rate(base, i);
- rate /= en7523_get_div(base, i);
+ rate = en7523_get_base_rate(desc, val);
+ val = readl(base + reg);
+ rate /= en7523_get_div(desc, val);
hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate);
if (IS_ERR(hw)) {
@@ -419,17 +586,12 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat
hw = en7523_register_pcie_clk(dev, np_base);
clk_data->hws[EN7523_CLK_PCIE] = hw;
-
- clk_data->num = EN7523_NUM_CLOCKS;
}
-static int en7523_clk_probe(struct platform_device *pdev)
+static int en7523_clk_hw_init(struct platform_device *pdev,
+ struct clk_hw_onecell_data *clk_data)
{
- struct device_node *node = pdev->dev.of_node;
- const struct en_clk_soc_data *soc_data;
- struct clk_hw_onecell_data *clk_data;
void __iomem *base, *np_base;
- int r;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
@@ -439,44 +601,199 @@ static int en7523_clk_probe(struct platform_device *pdev)
if (IS_ERR(np_base))
return PTR_ERR(np_base);
- soc_data = device_get_match_data(&pdev->dev);
- if (soc_data->hw_init) {
- r = soc_data->hw_init(pdev, base, np_base);
- if (r)
- return r;
+ en7523_register_clocks(&pdev->dev, clk_data, base, np_base);
+
+ return en7581_reset_register(&pdev->dev, np_base, en7523_rst_map,
+ ARRAY_SIZE(en7523_rst_map));
+}
+
+static void en7581_register_clocks(struct device *dev, struct clk_hw_onecell_data *clk_data,
+ struct regmap *map, void __iomem *base)
+{
+ struct clk_hw *hw;
+ u32 rate;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(en7581_base_clks); i++) {
+ const struct en_clk_desc *desc = &en7581_base_clks[i];
+ u32 val, reg = desc->div_reg ? desc->div_reg : desc->base_reg;
+ int err;
+
+ err = regmap_read(map, desc->base_reg, &val);
+ if (err) {
+ pr_err("Failed reading fixed clk rate %s: %d\n",
+ desc->name, err);
+ continue;
+ }
+ rate = en7523_get_base_rate(desc, val);
+
+ err = regmap_read(map, reg, &val);
+ if (err) {
+ pr_err("Failed reading fixed clk div %s: %d\n",
+ desc->name, err);
+ continue;
+ }
+ rate /= en7523_get_div(desc, val);
+
+ hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate);
+ if (IS_ERR(hw)) {
+ pr_err("Failed to register clk %s: %ld\n",
+ desc->name, PTR_ERR(hw));
+ continue;
+ }
+
+ clk_data->hws[desc->id] = hw;
}
+ hw = en7523_register_pcie_clk(dev, base);
+ clk_data->hws[EN7523_CLK_PCIE] = hw;
+}
+
+static int en7523_reset_update(struct reset_controller_dev *rcdev,
+ unsigned long id, bool assert)
+{
+ struct en_rst_data *rst_data = container_of(rcdev, struct en_rst_data, rcdev);
+ void __iomem *addr = rst_data->base + rst_data->bank_ofs[id / RST_NR_PER_BANK];
+ u32 val;
+
+ val = readl(addr);
+ if (assert)
+ val |= BIT(id % RST_NR_PER_BANK);
+ else
+ val &= ~BIT(id % RST_NR_PER_BANK);
+ writel(val, addr);
+
+ return 0;
+}
+
+static int en7523_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return en7523_reset_update(rcdev, id, true);
+}
+
+static int en7523_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return en7523_reset_update(rcdev, id, false);
+}
+
+static int en7523_reset_status(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct en_rst_data *rst_data = container_of(rcdev, struct en_rst_data, rcdev);
+ void __iomem *addr = rst_data->base + rst_data->bank_ofs[id / RST_NR_PER_BANK];
+
+ return !!(readl(addr) & BIT(id % RST_NR_PER_BANK));
+}
+
+static int en7523_reset_xlate(struct reset_controller_dev *rcdev,
+ const struct of_phandle_args *reset_spec)
+{
+ struct en_rst_data *rst_data = container_of(rcdev, struct en_rst_data, rcdev);
+
+ if (reset_spec->args[0] >= rcdev->nr_resets)
+ return -EINVAL;
+
+ return rst_data->idx_map[reset_spec->args[0]];
+}
+
+static const struct reset_control_ops en7581_reset_ops = {
+ .assert = en7523_reset_assert,
+ .deassert = en7523_reset_deassert,
+ .status = en7523_reset_status,
+};
+
+static int en7581_reset_register(struct device *dev, void __iomem *base,
+ const u16 *rst_map, int nr_resets)
+{
+ struct en_rst_data *rst_data;
+
+ rst_data = devm_kzalloc(dev, sizeof(*rst_data), GFP_KERNEL);
+ if (!rst_data)
+ return -ENOMEM;
+
+ rst_data->bank_ofs = en7581_rst_ofs;
+ rst_data->idx_map = rst_map;
+ rst_data->base = base;
+
+ rst_data->rcdev.nr_resets = nr_resets;
+ rst_data->rcdev.of_xlate = en7523_reset_xlate;
+ rst_data->rcdev.ops = &en7581_reset_ops;
+ rst_data->rcdev.of_node = dev->of_node;
+ rst_data->rcdev.of_reset_n_cells = 1;
+ rst_data->rcdev.owner = THIS_MODULE;
+ rst_data->rcdev.dev = dev;
+
+ return devm_reset_controller_register(dev, &rst_data->rcdev);
+}
+
+static int en7581_clk_hw_init(struct platform_device *pdev,
+ struct clk_hw_onecell_data *clk_data)
+{
+ struct regmap *map;
+ void __iomem *base;
+ u32 val;
+
+ map = syscon_regmap_lookup_by_compatible("airoha,en7581-chip-scu");
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+ base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ en7581_register_clocks(&pdev->dev, clk_data, map, base);
+
+ val = readl(base + REG_NP_SCU_SSTR);
+ val &= ~(REG_PCIE_XSI0_SEL_MASK | REG_PCIE_XSI1_SEL_MASK);
+ writel(val, base + REG_NP_SCU_SSTR);
+ val = readl(base + REG_NP_SCU_PCIC);
+ writel(val | 3, base + REG_NP_SCU_PCIC);
+
+ return en7581_reset_register(&pdev->dev, base, en7581_rst_map,
+ ARRAY_SIZE(en7581_rst_map));
+}
+
+static int en7523_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ const struct en_clk_soc_data *soc_data;
+ struct clk_hw_onecell_data *clk_data;
+ int r;
+
+ soc_data = device_get_match_data(&pdev->dev);
+
clk_data = devm_kzalloc(&pdev->dev,
- struct_size(clk_data, hws, EN7523_NUM_CLOCKS),
+ struct_size(clk_data, hws, soc_data->num_clocks),
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
- en7523_register_clocks(&pdev->dev, clk_data, base, np_base);
-
- r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+ clk_data->num = soc_data->num_clocks;
+ r = soc_data->hw_init(pdev, clk_data);
if (r)
- dev_err(&pdev->dev,
- "could not register clock provider: %s: %d\n",
- pdev->name, r);
+ return r;
- return r;
+ return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
}
static const struct en_clk_soc_data en7523_data = {
+ .num_clocks = ARRAY_SIZE(en7523_base_clks) + 1,
.pcie_ops = {
.is_enabled = en7523_pci_is_enabled,
.prepare = en7523_pci_prepare,
.unprepare = en7523_pci_unprepare,
},
+ .hw_init = en7523_clk_hw_init,
};
static const struct en_clk_soc_data en7581_data = {
+ /* We increment num_clocks by 1 to account for additional PCIe clock */
+ .num_clocks = ARRAY_SIZE(en7581_base_clks) + 1,
.pcie_ops = {
.is_enabled = en7581_pci_is_enabled,
- .prepare = en7581_pci_prepare,
.enable = en7581_pci_enable,
- .unprepare = en7581_pci_unprepare,
.disable = en7581_pci_disable,
},
.hw_init = en7581_clk_hw_init,
generated by cgit (git 2.34.1) at 2025-12-25 17:53:54 +0000