diff --git a/drivers/soc/tegra/Kconfig b/drivers/soc/tegra/Kconfig
index 89ebe22a3e27d9b780a3f349d1a6eb4f7707a34c..fe4481676da6a4a3e43ddd4e2bf027eaa73eb86d 100644
--- a/drivers/soc/tegra/Kconfig
+++ b/drivers/soc/tegra/Kconfig
@@ -104,6 +104,16 @@ config ARCH_TEGRA_186_SOC
multi-format support, ISP for image capture processing and BPMP for
power management.
+config ARCH_TEGRA_194_SOC
+ bool "NVIDIA Tegra194 SoC"
+ select MAILBOX
+ select TEGRA_BPMP
+ select TEGRA_HSP_MBOX
+ select TEGRA_IVC
+ select SOC_TEGRA_PMC
+ help
+ Enable support for the NVIDIA Tegra194 SoC.
+
endif
endif
diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index ce62a47a6647a81795ee6b25196253c06447853b..d9fcdb592b3966a561b1514fa671689315a5fa3d 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -127,8 +127,7 @@ struct tegra_powergate {
unsigned int id;
struct clk **clks;
unsigned int num_clks;
- struct reset_control **resets;
- unsigned int num_resets;
+ struct reset_control *reset;
};
struct tegra_io_pad_soc {
@@ -153,6 +152,7 @@ struct tegra_pmc_soc {
bool has_tsense_reset;
bool has_gpu_clamps;
+ bool needs_mbist_war;
const struct tegra_io_pad_soc *io_pads;
unsigned int num_io_pads;
@@ -368,31 +368,8 @@ static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
return err;
}
-static int tegra_powergate_reset_assert(struct tegra_powergate *pg)
+int __weak tegra210_clk_handle_mbist_war(unsigned int id)
{
- unsigned int i;
- int err;
-
- for (i = 0; i < pg->num_resets; i++) {
- err = reset_control_assert(pg->resets[i]);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int tegra_powergate_reset_deassert(struct tegra_powergate *pg)
-{
- unsigned int i;
- int err;
-
- for (i = 0; i < pg->num_resets; i++) {
- err = reset_control_deassert(pg->resets[i]);
- if (err)
- return err;
- }
-
return 0;
}
@@ -401,7 +378,7 @@ static int tegra_powergate_power_up(struct tegra_powergate *pg,
{
int err;
- err = tegra_powergate_reset_assert(pg);
+ err = reset_control_assert(pg->reset);
if (err)
return err;
@@ -425,12 +402,17 @@ static int tegra_powergate_power_up(struct tegra_powergate *pg,
usleep_range(10, 20);
- err = tegra_powergate_reset_deassert(pg);
+ err = reset_control_deassert(pg->reset);
if (err)
goto powergate_off;
usleep_range(10, 20);
+ if (pg->pmc->soc->needs_mbist_war)
+ err = tegra210_clk_handle_mbist_war(pg->id);
+ if (err)
+ goto disable_clks;
+
if (disable_clocks)
tegra_powergate_disable_clocks(pg);
@@ -456,7 +438,7 @@ static int tegra_powergate_power_down(struct tegra_powergate *pg)
usleep_range(10, 20);
- err = tegra_powergate_reset_assert(pg);
+ err = reset_control_assert(pg->reset);
if (err)
goto disable_clks;
@@ -475,7 +457,7 @@ static int tegra_powergate_power_down(struct tegra_powergate *pg)
assert_resets:
tegra_powergate_enable_clocks(pg);
usleep_range(10, 20);
- tegra_powergate_reset_deassert(pg);
+ reset_control_deassert(pg->reset);
usleep_range(10, 20);
disable_clks:
@@ -586,8 +568,8 @@ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
pg.id = id;
pg.clks = &clk;
pg.num_clks = 1;
- pg.resets = &rst;
- pg.num_resets = 1;
+ pg.reset = rst;
+ pg.pmc = pmc;
err = tegra_powergate_power_up(&pg, false);
if (err)
@@ -775,45 +757,22 @@ static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
struct device_node *np, bool off)
{
- struct reset_control *rst;
- unsigned int i, count;
int err;
- count = of_count_phandle_with_args(np, "resets", "#reset-cells");
- if (count == 0)
- return -ENODEV;
-
- pg->resets = kcalloc(count, sizeof(rst), GFP_KERNEL);
- if (!pg->resets)
- return -ENOMEM;
-
- for (i = 0; i < count; i++) {
- pg->resets[i] = of_reset_control_get_by_index(np, i);
- if (IS_ERR(pg->resets[i])) {
- err = PTR_ERR(pg->resets[i]);
- goto error;
- }
-
- if (off)
- err = reset_control_assert(pg->resets[i]);
- else
- err = reset_control_deassert(pg->resets[i]);
-
- if (err) {
- reset_control_put(pg->resets[i]);
- goto error;
- }
+ pg->reset = of_reset_control_array_get_exclusive(np);
+ if (IS_ERR(pg->reset)) {
+ err = PTR_ERR(pg->reset);
+ pr_err("failed to get device resets: %d\n", err);
+ return err;
}
- pg->num_resets = count;
-
- return 0;
-
-error:
- while (i--)
- reset_control_put(pg->resets[i]);
+ if (off)
+ err = reset_control_assert(pg->reset);
+ else
+ err = reset_control_deassert(pg->reset);
- kfree(pg->resets);
+ if (err)
+ reset_control_put(pg->reset);
return err;
}
@@ -905,10 +864,7 @@ static void tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
pm_genpd_remove(&pg->genpd);
remove_resets:
- while (pg->num_resets--)
- reset_control_put(pg->resets[pg->num_resets]);
-
- kfree(pg->resets);
+ reset_control_put(pg->reset);
remove_clks:
while (pg->num_clks--)
@@ -1815,6 +1771,7 @@ static const struct tegra_pmc_soc tegra210_pmc_soc = {
.cpu_powergates = tegra210_cpu_powergates,
.has_tsense_reset = true,
.has_gpu_clamps = true,
+ .needs_mbist_war = true,
.num_io_pads = ARRAY_SIZE(tegra210_io_pads),
.io_pads = tegra210_io_pads,
.regs = &tegra20_pmc_regs,
@@ -1920,6 +1877,7 @@ static const struct tegra_pmc_soc tegra186_pmc_soc = {
};
static const struct of_device_id tegra_pmc_match[] = {
+ { .compatible = "nvidia,tegra194-pmc", .data = &tegra186_pmc_soc },
{ .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
{ .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
{ .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },