Re: [PATCH v2 3/3] remoteproc: qcom: Add msm8996 specific changes in mss rproc driver.
From: Dwivedi, Avaneesh Kumar (avani)
Date: Fri Mar 03 2017 - 13:17:09 EST
On 2/28/2017 4:18 AM, Stephen Boyd wrote:
On 01/30, Avaneesh Kumar Dwivedi wrote:
diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index 35eee68..9c12a36 100644
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -485,35 +497,99 @@ static int q6v5_rmb_mba_wait(struct q6v5 *qproc, u32 status, int ms)
static int q6v5proc_reset(struct q6v5 *qproc)
{
- u32 val;
+ u64 val;
Why u64? There isn't any readq/writeq usage here.
OK
int ret;
+ int i;
[...]
+ if (qproc->version == MSS_MSM8996) {
+ /* Override the ACC value if required */
+ writel(QDSP6SS_ACC_OVERRIDE_VAL,
+ qproc->reg_base + QDSP6SS_STRAP_ACC);
+
+ /* Assert resets, stop core */
+ val = readl(qproc->reg_base + QDSP6SS_RESET_REG);
+ val |= (Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE);
Useless parenthesis.
ok
+ writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* BHS require xo cbcr to be enabled */
+ val = readl(qproc->reg_base + QDSP6SS_XO_CBCR);
+ val |= 0x1;
+ writel(val, qproc->reg_base + QDSP6SS_XO_CBCR);
+ /* Read CLKOFF bit to go low indicating CLK is enabled */
+ ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR,
+ val, !(val & BIT(31)), 1, HALT_CHECK_MAX_LOOPS);
+ if (ret) {
+ dev_err(qproc->dev,
+ "xo cbcr enabling timed out (rc:%d)\n", ret);
+ return ret;
+ }
+ /* Enable power block headswitch and wait for it to stabilize */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= QDSP6v56_BHS_ON;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ udelay(1);
+
+ /* Put LDO in bypass mode */
+ val |= QDSP6v56_LDO_BYP;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Deassert QDSP6 compiler memory clamp */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val &= ~QDSP6v56_CLAMP_QMC_MEM;
+ writel(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);
Useless parenthesis.
ok
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+
+ /* Turn on L1, L2, ETB and JU memories 1 at a time */
+ val = readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL);
+ for (i = 19; i >= 0; i--) {
+ val |= BIT(i);
+ writel(val, qproc->reg_base +
+ QDSP6SS_MEM_PWR_CTL);
+ /*
+ * Read back value to ensure the write is done then
+ * wait for 1us for both memory peripheral and data
+ * array to turn on.
+ */
+ val |= readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL);
+ udelay(1);
+ }
+ /* Remove word line clamp */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val &= ~QDSP6v56_CLAMP_WL;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ } else {
+ /* Assert resets, stop core */
+ val = readl(qproc->reg_base + QDSP6SS_RESET_REG);
+ val |= (Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE);
Useless parenthesis.
ok
+ writel(val, qproc->reg_base + QDSP6SS_RESET_REG);
+
+ /* Enable power block headswitch and wait for it to stabilize */
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= QDSS_BHS_ON | QDSS_LDO_BYP;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ udelay(1);
@@ -849,6 +925,7 @@ static int q6v5_stop(struct rproc *rproc)
{
struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
int ret;
+ int val;
u32 instead of int?
ok
qproc->running = false;
@@ -866,6 +943,15 @@ static int q6v5_stop(struct rproc *rproc)
q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem);
q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc);
+ if (qproc->version == MSS_MSM8996) {
+ /*
+ * To avoid high MX current during LPASS/MSS restart.
+ */
Three lines could be one line comment instead.
ok.
+ val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ val |= Q6SS_CLAMP_IO | QDSP6v56_CLAMP_WL |
+ QDSP6v56_CLAMP_QMC_MEM;
+ writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG);
+ }
reset_control_assert(qproc->mss_restart);
q6v5_clk_disable(qproc->dev, qproc->active_clks,
qproc->active_clk_count);
@@ -1213,6 +1299,47 @@ static int q6v5_remove(struct platform_device *pdev)
return 0;
}
+static const struct rproc_hexagon_res msm8996_mss = {
+ .hexagon_mba_image = "mba.mbn",
+ .proxy_supply = (struct qcom_mss_reg_res[]) {
+ {
+ .supply = "vdd_mx",
+ .uV = 6,
+ },
+ {
+ .supply = "vdd_cx",
+ .uV = 7,
+ .uA = 100000,
+ },
vdd cx and vdd mx are corners. The plan is to _not_ use the
regulator framework for those, so treating them like supplies is
incorrect here.
vdd cx and mx though in downstream are voted for corner but they are
always ON domain upstream as per regulator team when i discussed with them.
should i drop them altogether?
+ {
+ .supply = "vdd_pll",
+ .uV = 1800000,
+ .uA = 100000,
+ },
+ {}
+ },
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.