q6v55 reset sequence is handled separately and removing idle check
before asserting reset as it has been observed it return idle some
time even without being in idle.
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@xxxxxxxxxxxxxx>
---
drivers/remoteproc/qcom_q6v5_pil.c | 103 +++++++++++++++++++++++++++++++++++--
1 file changed, 98 insertions(+), 5 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index c7dca40..0fac8d8 100644
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -536,6 +536,104 @@ static int q6v5proc_reset(struct q6v5 *qproc)
return ret;
}
+static int q6v6proc_reset(struct q6v5 *qproc)
+{
+ int ret, i, count;
+ u64 val;
+
+ /* Override the ACC value if required */
+ writel_relaxed(QDSP6SS_ACC_OVERRIDE_VAL,
+ qproc->reg_base + QDSP6SS_STRAP_ACC);
+
+ /* Assert resets, stop core */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_RESET_REG);
+ val |= (Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE);
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* BHS require xo cbcr to be enabled */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_XO_CBCR);
+ val |= 0x1;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_XO_CBCR);
+ for (count = HALT_CHECK_MAX_LOOPS; count > 0; count--) {
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_XO_CBCR);
+ if (!(val & BIT(31)))
+ break;
+ udelay(1);
+ }
+
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_XO_CBCR);
+ if ((val & BIT(31)))
+ dev_err(qproc->dev, "Failed to enable xo branch clock.\n");
+
+ /* Enable power block headswitch, and wait for it to stabilize */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= QDSP6v55_BHS_ON;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ udelay(1);
+
+ /* Put LDO in bypass mode */
+ val |= QDSP6v55_LDO_BYP;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ /*
+ * Turn on memories. L2 banks should be done individually
+ * to minimize inrush current.
+ */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val &= ~QDSP6v55_CLAMP_QMC_MEM;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Deassert memory peripheral sleep and L2 memory standby */
+ val |= (Q6SS_L2DATA_STBY_N | Q6SS_SLP_RET_N);
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Turn on L1, L2, ETB and JU memories 1 at a time */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_MEM_PWR_CTL);
+ for (i = 19; i >= 0; i--) {
+ val |= BIT(i);
+ writel_relaxed(val, qproc->reg_base +
+ QDSP6SS_MEM_PWR_CTL);
+ /*
+ * Wait for 1us for both memory peripheral and
+ * data array to turn on.
+ */
+ mb();
+ udelay(1);
+ }
+
+ /* Remove word line clamp */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val &= ~QDSP6v55_CLAMP_WL;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Remove IO clamp */
+ val &= ~Q6SS_CLAMP_IO;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Bring core out of reset */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_RESET_REG);
+ val &= ~(Q6SS_CORE_ARES | Q6SS_STOP_CORE);
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* Turn on core clock */
+ val = readl_relaxed(qproc->reg_base + QDSP6SS_GFMUX_CTL_REG);
+ val |= Q6SS_CLK_ENABLE;
+ writel_relaxed(val, qproc->reg_base + QDSP6SS_GFMUX_CTL_REG);
+
+
+ /* Wait for PBL status */
+ ret = q6v5_rmb_pbl_wait(qproc, 1000);
+ if (ret == -ETIMEDOUT) {
+ dev_err(qproc->dev, "PBL boot timed out\n");
+ } else if (ret != RMB_PBL_SUCCESS) {
+ dev_err(qproc->dev, "PBL returned unexpected status %d\n", ret);
+ ret = -EINVAL;
+ } else {
+ ret = 0;
+ }
+
+ return ret;
+}
+
static void q6v5proc_halt_axi_port(struct q6v5 *qproc,
struct regmap *halt_map,
u32 offset)
@@ -544,11 +642,6 @@ static void q6v5proc_halt_axi_port(struct q6v5 *qproc,
unsigned int val;
int ret;
- /* Check if we're already idle */
- ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
- if (!ret && val)
- return;
-
/* Assert halt request */
regmap_write(halt_map, offset + AXI_HALTREQ_REG, 1);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
--
To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
