* [PATCH v2 2/3] hte: tegra194: Add Tegra264 GTE support
2026-04-08 21:24 [PATCH v2 0/3] Add Tegra264 HTE provider Suneel Garapati
2026-04-08 21:24 ` [PATCH v2 1/3] dt-bindings: timestamp: Add Tegra264 support Suneel Garapati
@ 2026-04-08 21:24 ` Suneel Garapati
2026-04-08 21:24 ` [PATCH v2 3/3] arm64: tegra: Add GTE nodes for Tegra264 Suneel Garapati
2 siblings, 0 replies; 4+ messages in thread
From: Suneel Garapati @ 2026-04-08 21:24 UTC (permalink / raw)
To: dipenp, jonathanh, thierry.reding, krzk+dt, conor+dt, amhetre,
sheetal, kkartik, robh, pshete, timestamp, devicetree,
linux-tegra, linux-kernel
Cc: Suneel Garapati
Add AON-GTE mapping and LIC GTE instance support for the Tegra264.
Move TSC clock parameters from macros to members of SoC data
as values differ for Tegra264 chip.
Signed-off-by: Suneel Garapati <suneelg@nvidia.com>
---
drivers/hte/hte-tegra194.c | 133 +++++++++++++++++++++++++++++++++++--
1 file changed, 128 insertions(+), 5 deletions(-)
diff --git a/drivers/hte/hte-tegra194.c b/drivers/hte/hte-tegra194.c
index 690eb9be30fb..4a7702b32b24 100644
--- a/drivers/hte/hte-tegra194.c
+++ b/drivers/hte/hte-tegra194.c
@@ -20,10 +20,11 @@
#define HTE_SUSPEND 0
-/* HTE source clock TSC is 31.25MHz */
+/* HTE source clock TSC is 1GHz for T264 and 31.25MHz for others */
#define HTE_TS_CLK_RATE_HZ 31250000ULL
+#define HTE_TS_CLK_RATE_1G 1000000000ULL
#define HTE_CLK_RATE_NS 32
-#define HTE_TS_NS_SHIFT __builtin_ctz(HTE_CLK_RATE_NS)
+#define HTE_CLK_RATE_NS_1G 1
#define NV_AON_SLICE_INVALID -1
#define NV_LINES_IN_SLICE 32
@@ -120,6 +121,8 @@ struct tegra_hte_data {
u32 slices;
u32 map_sz;
u32 sec_map_sz;
+ u64 tsc_clkrate_hz;
+ u32 tsc_clkrate_ns;
const struct tegra_hte_line_mapped *map;
const struct tegra_hte_line_mapped *sec_map;
};
@@ -317,6 +320,94 @@ static const struct tegra_hte_line_mapped tegra234_aon_gpio_sec_map[] = {
[40] = {2, NV_AON_HTE_SLICE2_IRQ_GPIO_23},
};
+static const struct tegra_hte_line_mapped tegra264_aon_gpio_map[] = {
+ /* gpio, slice, bit_index */
+ /* AA port */
+ [0] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_29},
+ [1] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_28},
+ [2] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_27},
+ [3] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_26},
+ [4] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_25},
+ [5] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_24},
+ [6] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_23},
+ [7] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_22},
+ /* BB port */
+ [8] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_21},
+ [9] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_20},
+ /* CC port */
+ [10] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_19},
+ [11] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_18},
+ [12] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_17},
+ [13] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_16},
+ [14] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_15},
+ [15] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_14},
+ [16] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_13},
+ [17] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_12},
+ /* DD port */
+ [18] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_11},
+ [19] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_10},
+ [20] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_9},
+ [21] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_8},
+ [22] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_7},
+ [23] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_6},
+ [24] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_5},
+ [25] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_4},
+ /* EE port */
+ [26] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_3},
+ [27] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_2},
+ [28] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_1},
+ [29] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_0},
+};
+
+static const struct tegra_hte_line_mapped tegra264_aon_gpio_sec_map[] = {
+ /* gpio, slice, bit_index */
+ /* AA port */
+ [0] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_29},
+ [1] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_28},
+ [2] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_27},
+ [3] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_26},
+ [4] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_25},
+ [5] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_24},
+ [6] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_23},
+ [7] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_22},
+ /* BB port */
+ [8] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_21},
+ [9] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_20},
+ [10] = {NV_AON_SLICE_INVALID, 0},
+ [11] = {NV_AON_SLICE_INVALID, 0},
+ [12] = {NV_AON_SLICE_INVALID, 0},
+ [13] = {NV_AON_SLICE_INVALID, 0},
+ [14] = {NV_AON_SLICE_INVALID, 0},
+ [15] = {NV_AON_SLICE_INVALID, 0},
+ /* CC port */
+ [16] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_19},
+ [17] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_18},
+ [18] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_17},
+ [19] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_16},
+ [20] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_15},
+ [21] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_14},
+ [22] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_13},
+ [23] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_12},
+ /* DD port */
+ [24] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_11},
+ [25] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_10},
+ [26] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_9},
+ [27] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_8},
+ [28] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_7},
+ [29] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_6},
+ [30] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_5},
+ [31] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_4},
+ /* EE port */
+ [32] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_3},
+ [33] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_2},
+ [34] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_1},
+ [35] = {3, NV_AON_HTE_SLICE2_IRQ_GPIO_0},
+ [36] = {NV_AON_SLICE_INVALID, 0},
+ [37] = {NV_AON_SLICE_INVALID, 0},
+ [38] = {NV_AON_SLICE_INVALID, 0},
+ [39] = {NV_AON_SLICE_INVALID, 0},
+};
+
static const struct tegra_hte_data t194_aon_hte = {
.map_sz = ARRAY_SIZE(tegra194_aon_gpio_map),
.map = tegra194_aon_gpio_map,
@@ -324,6 +415,8 @@ static const struct tegra_hte_data t194_aon_hte = {
.sec_map = tegra194_aon_gpio_sec_map,
.type = HTE_TEGRA_TYPE_GPIO,
.slices = 3,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_HZ,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS,
};
static const struct tegra_hte_data t234_aon_hte = {
@@ -333,6 +426,19 @@ static const struct tegra_hte_data t234_aon_hte = {
.sec_map = tegra234_aon_gpio_sec_map,
.type = HTE_TEGRA_TYPE_GPIO,
.slices = 3,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_HZ,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS,
+};
+
+static const struct tegra_hte_data t264_aon_hte = {
+ .map_sz = ARRAY_SIZE(tegra264_aon_gpio_map),
+ .map = tegra264_aon_gpio_map,
+ .sec_map_sz = ARRAY_SIZE(tegra264_aon_gpio_sec_map),
+ .sec_map = tegra264_aon_gpio_sec_map,
+ .type = HTE_TEGRA_TYPE_GPIO,
+ .slices = 4,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_1G,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS_1G,
};
static const struct tegra_hte_data t194_lic_hte = {
@@ -340,6 +446,8 @@ static const struct tegra_hte_data t194_lic_hte = {
.map = NULL,
.type = HTE_TEGRA_TYPE_LIC,
.slices = 11,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_HZ,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS,
};
static const struct tegra_hte_data t234_lic_hte = {
@@ -347,6 +455,17 @@ static const struct tegra_hte_data t234_lic_hte = {
.map = NULL,
.type = HTE_TEGRA_TYPE_LIC,
.slices = 17,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_HZ,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS,
+};
+
+static const struct tegra_hte_data t264_lic_hte = {
+ .map_sz = 0,
+ .map = NULL,
+ .type = HTE_TEGRA_TYPE_LIC,
+ .slices = 10,
+ .tsc_clkrate_hz = HTE_TS_CLK_RATE_1G,
+ .tsc_clkrate_ns = HTE_CLK_RATE_NS_1G,
};
static inline u32 tegra_hte_readl(struct tegra_hte_soc *hte, u32 reg)
@@ -574,12 +693,12 @@ static int tegra_hte_release(struct hte_chip *chip, struct hte_ts_desc *desc,
static int tegra_hte_clk_src_info(struct hte_chip *chip,
struct hte_clk_info *ci)
{
- (void)chip;
+ struct tegra_hte_soc *hte_dev = chip->data;
if (!ci)
return -EINVAL;
- ci->hz = HTE_TS_CLK_RATE_HZ;
+ ci->hz = hte_dev->prov_data->tsc_clkrate_hz;
ci->type = CLOCK_MONOTONIC;
return 0;
@@ -602,8 +721,10 @@ static void tegra_hte_read_fifo(struct tegra_hte_soc *gs)
{
u32 tsh, tsl, src, pv, cv, acv, slice, bit_index, line_id;
u64 tsc;
+ u8 tsc_ns_shift;
struct hte_ts_data el;
+ tsc_ns_shift = __builtin_ctz(gs->prov_data->tsc_clkrate_ns);
while ((tegra_hte_readl(gs, HTE_TESTATUS) >>
HTE_TESTATUS_OCCUPANCY_SHIFT) &
HTE_TESTATUS_OCCUPANCY_MASK) {
@@ -621,7 +742,7 @@ static void tegra_hte_read_fifo(struct tegra_hte_soc *gs)
while (acv) {
bit_index = __builtin_ctz(acv);
line_id = bit_index + (slice << 5);
- el.tsc = tsc << HTE_TS_NS_SHIFT;
+ el.tsc = tsc << tsc_ns_shift;
el.raw_level = tegra_hte_get_level(gs, line_id);
hte_push_ts_ns(gs->chip, line_id, &el);
acv &= ~BIT(bit_index);
@@ -656,6 +777,8 @@ static const struct of_device_id tegra_hte_of_match[] = {
{ .compatible = "nvidia,tegra194-gte-aon", .data = &t194_aon_hte},
{ .compatible = "nvidia,tegra234-gte-lic", .data = &t234_lic_hte},
{ .compatible = "nvidia,tegra234-gte-aon", .data = &t234_aon_hte},
+ { .compatible = "nvidia,tegra264-gte-lic", .data = &t264_lic_hte},
+ { .compatible = "nvidia,tegra264-gte-aon", .data = &t264_aon_hte},
{ }
};
MODULE_DEVICE_TABLE(of, tegra_hte_of_match);
--
2.34.1
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