Lines Matching refs:otp
74 static int rockchip_otp_reset(struct rockchip_otp *otp) in rockchip_otp_reset() argument
78 ret = reset_control_assert(otp->rst); in rockchip_otp_reset()
80 dev_err(otp->dev, "failed to assert otp phy %d\n", ret); in rockchip_otp_reset()
86 ret = reset_control_deassert(otp->rst); in rockchip_otp_reset()
88 dev_err(otp->dev, "failed to deassert otp phy %d\n", ret); in rockchip_otp_reset()
95 static int rockchip_otp_wait_status(struct rockchip_otp *otp, u32 flag) in rockchip_otp_wait_status() argument
100 ret = readl_poll_timeout_atomic(otp->base + OTPC_INT_STATUS, status, in rockchip_otp_wait_status()
106 writel(flag, otp->base + OTPC_INT_STATUS); in rockchip_otp_wait_status()
111 static int rockchip_otp_ecc_enable(struct rockchip_otp *otp, bool enable) in rockchip_otp_ecc_enable() argument
116 otp->base + OTPC_SBPI_CTRL); in rockchip_otp_ecc_enable()
118 writel(SBPI_CMD_VALID_MASK | 0x1, otp->base + OTPC_SBPI_CMD_VALID_PRE); in rockchip_otp_ecc_enable()
120 otp->base + OTPC_SBPI_CMD0_OFFSET); in rockchip_otp_ecc_enable()
122 writel(SBPI_ECC_ENABLE, otp->base + OTPC_SBPI_CMD1_OFFSET); in rockchip_otp_ecc_enable()
124 writel(SBPI_ECC_DISABLE, otp->base + OTPC_SBPI_CMD1_OFFSET); in rockchip_otp_ecc_enable()
126 writel(SBPI_ENABLE_MASK | SBPI_ENABLE, otp->base + OTPC_SBPI_CTRL); in rockchip_otp_ecc_enable()
128 ret = rockchip_otp_wait_status(otp, OTPC_SBPI_DONE); in rockchip_otp_ecc_enable()
130 dev_err(otp->dev, "timeout during ecc_enable\n"); in rockchip_otp_ecc_enable()
138 struct rockchip_otp *otp = context; in rockchip_otp_read() local
142 ret = clk_bulk_prepare_enable(otp->num_clks, otp->clks); in rockchip_otp_read()
144 dev_err(otp->dev, "failed to prepare/enable clks\n"); in rockchip_otp_read()
148 ret = rockchip_otp_reset(otp); in rockchip_otp_read()
150 dev_err(otp->dev, "failed to reset otp phy\n"); in rockchip_otp_read()
154 ret = rockchip_otp_ecc_enable(otp, false); in rockchip_otp_read()
156 dev_err(otp->dev, "rockchip_otp_ecc_enable err\n"); in rockchip_otp_read()
160 writel(OTPC_USE_USER | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); in rockchip_otp_read()
164 otp->base + OTPC_USER_ADDR); in rockchip_otp_read()
166 otp->base + OTPC_USER_ENABLE); in rockchip_otp_read()
167 ret = rockchip_otp_wait_status(otp, OTPC_USER_DONE); in rockchip_otp_read()
169 dev_err(otp->dev, "timeout during read setup\n"); in rockchip_otp_read()
172 *buf++ = readb(otp->base + OTPC_USER_Q); in rockchip_otp_read()
176 writel(0x0 | OTPC_USE_USER_MASK, otp->base + OTPC_USER_CTRL); in rockchip_otp_read()
178 clk_bulk_disable_unprepare(otp->num_clks, otp->clks); in rockchip_otp_read()
212 struct rockchip_otp *otp; in rockchip_otp_probe() local
223 otp = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_otp), in rockchip_otp_probe()
225 if (!otp) in rockchip_otp_probe()
228 otp->dev = dev; in rockchip_otp_probe()
229 otp->base = devm_platform_ioremap_resource(pdev, 0); in rockchip_otp_probe()
230 if (IS_ERR(otp->base)) in rockchip_otp_probe()
231 return PTR_ERR(otp->base); in rockchip_otp_probe()
233 otp->num_clks = ARRAY_SIZE(rockchip_otp_clocks); in rockchip_otp_probe()
234 otp->clks = devm_kcalloc(dev, otp->num_clks, in rockchip_otp_probe()
235 sizeof(*otp->clks), GFP_KERNEL); in rockchip_otp_probe()
236 if (!otp->clks) in rockchip_otp_probe()
239 for (i = 0; i < otp->num_clks; ++i) in rockchip_otp_probe()
240 otp->clks[i].id = rockchip_otp_clocks[i]; in rockchip_otp_probe()
242 ret = devm_clk_bulk_get(dev, otp->num_clks, otp->clks); in rockchip_otp_probe()
246 otp->rst = devm_reset_control_get(dev, "phy"); in rockchip_otp_probe()
247 if (IS_ERR(otp->rst)) in rockchip_otp_probe()
248 return PTR_ERR(otp->rst); in rockchip_otp_probe()
251 otp_config.priv = otp; in rockchip_otp_probe()