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RK3528 is a cost down SoC with high CPU performance. However, it has poor PCIe performance (same for RK3576). Also CPU 0/1 can't get any rest due to rkbin limitation. Some code references: https://github.com/warpme/minimyth2
62 lines
1.7 KiB
Diff
62 lines
1.7 KiB
Diff
From 54d4b6b3014f3122a2235533e6511b0d6ca2cd45 Mon Sep 17 00:00:00 2001
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From: Finley Xiao <finley.xiao@rock-chips.com>
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Date: Wed, 12 Oct 2022 19:25:38 +0800
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Subject: [PATCH] soc: rockchip: power-domain: Add always on configuration for
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power domain
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Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
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Change-Id: Ic57f7f3a564f7d71b680e3c435d0460474b5a4a0
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---
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drivers/soc/rockchip/pm_domains.c | 41 +++++++++++++++++++++++--------
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1 file changed, 31 insertions(+), 10 deletions(-)
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--- a/drivers/soc/rockchip/pm_domains.c
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+++ b/drivers/soc/rockchip/pm_domains.c
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@@ -44,6 +44,7 @@ struct rockchip_domain_info {
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int pwr_w_mask;
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int req_w_mask;
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int repair_status_mask;
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+ bool always_on;
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u32 pwr_offset;
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u32 req_offset;
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};
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@@ -527,6 +528,26 @@ static void rockchip_pd_detach_dev(struc
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pm_clk_destroy(dev);
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}
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+static int rockchip_pd_add_alwasy_on_flag(struct rockchip_pm_domain *pd)
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+{
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+ int error;
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+
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+ if (pd->genpd.flags & GENPD_FLAG_ALWAYS_ON)
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+ return 0;
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+ pd->genpd.flags |= GENPD_FLAG_ALWAYS_ON;
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+ if (!rockchip_pmu_domain_is_on(pd)) {
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+ error = rockchip_pd_power(pd, true);
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+ if (error) {
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+ dev_err(pd->pmu->dev,
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+ "failed to power on domain '%s': %d\n",
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+ pd->genpd.name, error);
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+ return error;
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+ }
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+ }
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+
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+ return 0;
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+}
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+
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static int rockchip_pm_add_one_domain(struct rockchip_pmu *pmu,
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struct device_node *node)
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{
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@@ -645,6 +666,11 @@ static int rockchip_pm_add_one_domain(st
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pd->genpd.flags = GENPD_FLAG_PM_CLK;
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if (pd_info->active_wakeup)
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pd->genpd.flags |= GENPD_FLAG_ACTIVE_WAKEUP;
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+ if (pd_info->always_on) {
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+ error = rockchip_pd_add_alwasy_on_flag(pd);
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+ if (error)
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+ goto err_unprepare_clocks;
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+ }
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pm_genpd_init(&pd->genpd, NULL, !rockchip_pmu_domain_is_on(pd));
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pmu->genpd_data.domains[id] = &pd->genpd;
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