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@@ -0,0 +1,75 @@
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+/*
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+ * Copyright (c) 2015 Google, Inc
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+ * Written by Simon Glass <sjg@chromium.org>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+#include <common.h>
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+#include <dm.h>
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+#include <errno.h>
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+#include <pwm.h>
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+#include <asm/test.h>
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+enum {
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+ NUM_CHANNELS = 3,
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+};
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+
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+struct sandbox_pwm_chan {
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+ uint period_ns;
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+ uint duty_ns;
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+ bool enable;
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+};
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+
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+struct sandbox_pwm_priv {
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+ struct sandbox_pwm_chan chan[NUM_CHANNELS];
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+};
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+
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+static int sandbox_pwm_set_config(struct udevice *dev, uint channel,
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+ uint period_ns, uint duty_ns)
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+{
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+ struct sandbox_pwm_priv *priv = dev_get_priv(dev);
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+ struct sandbox_pwm_chan *chan;
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+
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+ if (channel >= NUM_CHANNELS)
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+ return -ENOSPC;
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+ chan = &priv->chan[channel];
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+ chan->period_ns = period_ns;
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+ chan->duty_ns = duty_ns;
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+
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+ return 0;
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+}
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+
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+static int sandbox_pwm_set_enable(struct udevice *dev, uint channel,
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+ bool enable)
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+{
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+ struct sandbox_pwm_priv *priv = dev_get_priv(dev);
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+ struct sandbox_pwm_chan *chan;
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+
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+ if (channel >= NUM_CHANNELS)
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+ return -ENOSPC;
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+ chan = &priv->chan[channel];
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+ chan->enable = enable;
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+
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+ return 0;
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+}
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+
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+static const struct pwm_ops sandbox_pwm_ops = {
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+ .set_config = sandbox_pwm_set_config,
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+ .set_enable = sandbox_pwm_set_enable,
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+};
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+
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+static const struct udevice_id sandbox_pwm_ids[] = {
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+ { .compatible = "sandbox,pwm" },
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+ { }
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+};
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+
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+U_BOOT_DRIVER(warm_pwm_sandbox) = {
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+ .name = "pwm_sandbox",
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+ .id = UCLASS_PWM,
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+ .of_match = sandbox_pwm_ids,
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+ .ops = &sandbox_pwm_ops,
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+ .priv_auto_alloc_size = sizeof(struct sandbox_pwm_priv),
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+};
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