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remoteproc: q6v5: Add support for mss remoteproc on SDM845

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From SDM845, the Q6SS reset sequence on software side has been
simplified with the introduction of boot FSM which assists in
bringing the Q6 out of reset.

SDM845 brings a new reset signal ALT_RESET which is a part of
the MSS subsystem hence requires reset clks to be enabled before
assert/deassert. Use the SoC specific reset helper function to
add support for ALT_RESET in SDM845.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Sibi Sankar 2018-05-21 22:57:13 +05:30 committed by Bjorn Andersson
parent 9f135fa1ff
commit 231f67d1fb
1 changed files with 111 additions and 4 deletions
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115
drivers/remoteproc/qcom_q6v5_pil.c
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@ -57,6 +57,8 @@
#define RMB_PMI_META_DATA_REG 0x10
#define RMB_PMI_CODE_START_REG 0x14
#define RMB_PMI_CODE_LENGTH_REG 0x18
#define RMB_MBA_MSS_STATUS 0x40
#define RMB_MBA_ALT_RESET 0x44
#define RMB_CMD_META_DATA_READY 0x1
#define RMB_CMD_LOAD_READY 0x2
@ -104,6 +106,13 @@
#define QDSP6SS_XO_CBCR 0x0038
#define QDSP6SS_ACC_OVERRIDE_VAL 0x20
/* QDSP6v65 parameters */
#define QDSP6SS_SLEEP 0x3C
#define QDSP6SS_BOOT_CORE_START 0x400
#define QDSP6SS_BOOT_CMD 0x404
#define SLEEP_CHECK_MAX_LOOPS 200
#define BOOT_FSM_TIMEOUT 10000
struct reg_info {
struct regulator *reg;
int uV;
@ -121,9 +130,11 @@ struct rproc_hexagon_res {
struct qcom_mss_reg_res *proxy_supply;
struct qcom_mss_reg_res *active_supply;
char **proxy_clk_names;
char **reset_clk_names;
char **active_clk_names;
int version;
bool need_mem_protection;
bool has_alt_reset;
};
struct q6v5 {
@ -148,8 +159,10 @@ struct q6v5 {
bool proxy_unvoted;
struct clk *active_clks[8];
struct clk *reset_clks[4];
struct clk *proxy_clks[4];
int active_clk_count;
int reset_clk_count;
int proxy_clk_count;
struct reg_info active_regs[1];
@ -174,6 +187,7 @@ struct q6v5 {
struct qcom_rproc_ssr ssr_subdev;
struct qcom_sysmon *sysmon;
bool need_mem_protection;
bool has_alt_reset;
int mpss_perm;
int mba_perm;
int version;
@ -183,6 +197,7 @@ enum {
MSS_MSM8916,
MSS_MSM8974,
MSS_MSM8996,
MSS_SDM845,
};
static int q6v5_regulator_init(struct device *dev, struct reg_info *regs,
@ -339,12 +354,25 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
static int q6v5_reset_assert(struct q6v5 *qproc)
{
return reset_control_assert(qproc->mss_restart);
if (qproc->has_alt_reset)
return reset_control_reset(qproc->mss_restart);
else
return reset_control_assert(qproc->mss_restart);
}
static int q6v5_reset_deassert(struct q6v5 *qproc)
{
return reset_control_deassert(qproc->mss_restart);
int ret;
if (qproc->has_alt_reset) {
writel(1, qproc->rmb_base + RMB_MBA_ALT_RESET);
ret = reset_control_reset(qproc->mss_restart);
writel(0, qproc->rmb_base + RMB_MBA_ALT_RESET);
} else {
ret = reset_control_deassert(qproc->mss_restart);
}
return ret;
}
static int q6v5_rmb_pbl_wait(struct q6v5 *qproc, int ms)
@ -399,8 +427,35 @@ static int q6v5proc_reset(struct q6v5 *qproc)
int ret;
int i;
if (qproc->version == MSS_SDM845) {
val = readl(qproc->reg_base + QDSP6SS_SLEEP);
val |= 0x1;
writel(val, qproc->reg_base + QDSP6SS_SLEEP);
if (qproc->version == MSS_MSM8996) {
ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_SLEEP,
val, !(val & BIT(31)), 1,
SLEEP_CHECK_MAX_LOOPS);
if (ret) {
dev_err(qproc->dev, "QDSP6SS Sleep clock timed out\n");
return -ETIMEDOUT;
}
/* De-assert QDSP6 stop core */
writel(1, qproc->reg_base + QDSP6SS_BOOT_CORE_START);
/* Trigger boot FSM */
writel(1, qproc->reg_base + QDSP6SS_BOOT_CMD);
ret = readl_poll_timeout(qproc->rmb_base + RMB_MBA_MSS_STATUS,
val, (val & BIT(0)) != 0, 10, BOOT_FSM_TIMEOUT);
if (ret) {
dev_err(qproc->dev, "Boot FSM failed to complete.\n");
/* Reset the modem so that boot FSM is in reset state */
q6v5_reset_deassert(qproc);
return ret;
}
goto pbl_wait;
} else if (qproc->version == MSS_MSM8996) {
/* Override the ACC value if required */
writel(QDSP6SS_ACC_OVERRIDE_VAL,
qproc->reg_base + QDSP6SS_STRAP_ACC);
@ -508,6 +563,7 @@ static int q6v5proc_reset(struct q6v5 *qproc)
val &= ~Q6SS_STOP_CORE;
writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
pbl_wait:
/* Wait for PBL status */
ret = q6v5_rmb_pbl_wait(qproc, 1000);
if (ret == -ETIMEDOUT) {
@ -765,10 +821,18 @@ static int q6v5_start(struct rproc *rproc)
dev_err(qproc->dev, "failed to enable supplies\n");
goto disable_proxy_clk;
}
ret = q6v5_clk_enable(qproc->dev, qproc->reset_clks,
qproc->reset_clk_count);
if (ret) {
dev_err(qproc->dev, "failed to enable reset clocks\n");
goto disable_vdd;
}
ret = q6v5_reset_deassert(qproc);
if (ret) {
dev_err(qproc->dev, "failed to deassert mss restart\n");
goto disable_vdd;
goto disable_reset_clks;
}
ret = q6v5_clk_enable(qproc->dev, qproc->active_clks,
@ -854,6 +918,9 @@ static int q6v5_start(struct rproc *rproc)
assert_reset:
q6v5_reset_assert(qproc);
disable_reset_clks:
q6v5_clk_disable(qproc->dev, qproc->reset_clks,
qproc->reset_clk_count);
disable_vdd:
q6v5_regulator_disable(qproc, qproc->active_regs,
qproc->active_reg_count);
@ -917,6 +984,8 @@ static int q6v5_stop(struct rproc *rproc)
qproc->proxy_reg_count);
}
q6v5_clk_disable(qproc->dev, qproc->reset_clks,
qproc->reset_clk_count);
q6v5_clk_disable(qproc->dev, qproc->active_clks,
qproc->active_clk_count);
q6v5_regulator_disable(qproc, qproc->active_regs,
@ -1196,6 +1265,14 @@ static int q6v5_probe(struct platform_device *pdev)
}
qproc->proxy_clk_count = ret;
ret = q6v5_init_clocks(&pdev->dev, qproc->reset_clks,
desc->reset_clk_names);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get reset clocks.\n");
goto free_rproc;
}
qproc->reset_clk_count = ret;
ret = q6v5_init_clocks(&pdev->dev, qproc->active_clks,
desc->active_clk_names);
if (ret < 0) {
@ -1225,6 +1302,7 @@ static int q6v5_probe(struct platform_device *pdev)
goto free_rproc;
qproc->version = desc->version;
qproc->has_alt_reset = desc->has_alt_reset;
qproc->need_mem_protection = desc->need_mem_protection;
ret = q6v5_request_irq(qproc, pdev, "wdog", q6v5_wdog_interrupt);
if (ret < 0)
@ -1285,6 +1363,31 @@ static int q6v5_remove(struct platform_device *pdev)
return 0;
}
static const struct rproc_hexagon_res sdm845_mss = {
.hexagon_mba_image = "mba.mbn",
.proxy_clk_names = (char*[]){
"xo",
"axis2",
"prng",
NULL
},
.reset_clk_names = (char*[]){
"iface",
"snoc_axi",
NULL
},
.active_clk_names = (char*[]){
"bus",
"mem",
"gpll0_mss",
"mnoc_axi",
NULL
},
.need_mem_protection = true,
.has_alt_reset = true,
.version = MSS_SDM845,
};
static const struct rproc_hexagon_res msm8996_mss = {
.hexagon_mba_image = "mba.mbn",
.proxy_clk_names = (char*[]){
@ -1300,6 +1403,7 @@ static const struct rproc_hexagon_res msm8996_mss = {
NULL
},
.need_mem_protection = true,
.has_alt_reset = false,
.version = MSS_MSM8996,
};
@ -1331,6 +1435,7 @@ static const struct rproc_hexagon_res msm8916_mss = {
NULL
},
.need_mem_protection = false,
.has_alt_reset = false,
.version = MSS_MSM8916,
};
@ -1370,6 +1475,7 @@ static const struct rproc_hexagon_res msm8974_mss = {
NULL
},
.need_mem_protection = false,
.has_alt_reset = false,
.version = MSS_MSM8974,
};
@ -1378,6 +1484,7 @@ static const struct of_device_id q6v5_of_match[] = {
{ .compatible = "qcom,msm8916-mss-pil", .data = &msm8916_mss},
{ .compatible = "qcom,msm8974-mss-pil", .data = &msm8974_mss},
{ .compatible = "qcom,msm8996-mss-pil", .data = &msm8996_mss},
{ .compatible = "qcom,sdm845-mss-pil", .data = &sdm845_mss},
{ },
};
MODULE_DEVICE_TABLE(of, q6v5_of_match);