From: Jiaxing Hu <gahing@gahingwoo.com>
To: tomeu@tomeuvizoso.net, heiko@sntech.de, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org, ulfh@kernel.org,
p.zabel@pengutronix.de, ogabbay@kernel.org
Cc: chaoyi.chen@rock-chips.com, alchark@flipper.net,
royalnet026@gmail.com, dri-devel@lists.freedesktop.org,
linux-rockchip@lists.infradead.org, linux-pm@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Jiaxing Hu <gahing@gahingwoo.com>
Subject: [RFC PATCH v3 2/6] pmdomain/rockchip: add optional per-domain power-on settle delay
Date: Fri, 31 Jul 2026 16:35:03 +1200 [thread overview]
Message-ID: <20260731043507.1832277-3-gahing@gahingwoo.com> (raw)
In-Reply-To: <20260731043507.1832277-1-gahing@gahingwoo.com>
The RK3576 NPU domains need a short settle time after the idle request
is released before the QoS registers behind the domain answer. Without
it rockchip_pmu_restore_qos() reads back zeroes, and the NPU throws an
async SError on the first cold power-on.
Give rockchip_domain_info an optional delay_us and wait for it between
releasing idle and restoring QoS. Rename DOMAIN_M_O_R_G to
DOMAIN_M_O_R_G_W, since the suffixes name the fields the macro sets and
this one now also carries a wakeup delay; RK3576 is its only user, so
the old spelling is not kept around.
Signed-off-by: Jiaxing Hu <gahing@gahingwoo.com>
---
drivers/pmdomain/rockchip/pm-domains.c | 52 +++++++++++++++-----------
1 file changed, 30 insertions(+), 22 deletions(-)
diff --git a/drivers/pmdomain/rockchip/pm-domains.c b/drivers/pmdomain/rockchip/pm-domains.c
index ba66ae719..e1857f878 100644
--- a/drivers/pmdomain/rockchip/pm-domains.c
+++ b/drivers/pmdomain/rockchip/pm-domains.c
@@ -18,6 +18,7 @@
#include <linux/of_address.h>
#include <linux/of_clk.h>
#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/mfd/syscon.h>
@@ -59,6 +60,7 @@ struct rockchip_domain_info {
u32 pwr_offset;
u32 mem_offset;
u32 req_offset;
+ u32 delay_us;
};
struct rockchip_pmu_info {
@@ -185,7 +187,7 @@ struct rockchip_pmu {
.need_regulator = regulator, \
}
-#define DOMAIN_M_O_R_G(_name, p_offset, pwr, status, m_offset, m_status, r_status, r_offset, req, idle, ack, g_mask, wakeup) \
+#define DOMAIN_M_O_R_G_W(_name, p_offset, pwr, status, m_offset, m_status, r_status, r_offset, req, idle, ack, g_mask, delay, wakeup) \
{ \
.name = _name, \
.pwr_offset = p_offset, \
@@ -200,6 +202,7 @@ struct rockchip_pmu {
.req_mask = (req), \
.idle_mask = (idle), \
.clk_ungate_mask = (g_mask), \
+ .delay_us = (delay), \
.ack_mask = (ack), \
.active_wakeup = wakeup, \
}
@@ -258,8 +261,8 @@ struct rockchip_pmu {
#define DOMAIN_RK3568(name, pwr, req, wakeup, regulator) \
DOMAIN_M_R(name, pwr, pwr, req, req, req, wakeup, regulator)
-#define DOMAIN_RK3576(name, p_offset, pwr, status, r_status, r_offset, req, idle, g_mask, wakeup) \
- DOMAIN_M_O_R_G(name, p_offset, pwr, status, 0, r_status, r_status, r_offset, req, idle, idle, g_mask, wakeup)
+#define DOMAIN_RK3576(name, p_offset, pwr, status, r_status, r_offset, req, idle, g_mask, delay, wakeup) \
+ DOMAIN_M_O_R_G_W(name, p_offset, pwr, status, 0, r_status, r_status, r_offset, req, idle, idle, g_mask, delay, wakeup)
/*
* Dynamic Memory Controller may need to coordinate with us -- see
@@ -681,6 +684,10 @@ static int rockchip_pd_power(struct rockchip_pm_domain *pd, bool power_on)
if (ret < 0)
goto out;
+ /* Some domains need to settle before the QoS registers answer. */
+ if (pd->info->delay_us)
+ udelay(pd->info->delay_us);
+
rockchip_pmu_restore_qos(pd);
}
@@ -1300,25 +1307,26 @@ static const struct rockchip_domain_info rk3568_pm_domains[] = {
};
static const struct rockchip_domain_info rk3576_pm_domains[] = {
- [RK3576_PD_NPU] = DOMAIN_RK3576("npu", 0x0, BIT(0), BIT(0), 0, 0x0, 0, 0, 0, false),
- [RK3576_PD_NVM] = DOMAIN_RK3576("nvm", 0x0, BIT(6), 0, BIT(6), 0x4, BIT(2), BIT(18), BIT(2), false),
- [RK3576_PD_SDGMAC] = DOMAIN_RK3576("sdgmac", 0x0, BIT(7), 0, BIT(7), 0x4, BIT(1), BIT(17), 0x6, false),
- [RK3576_PD_AUDIO] = DOMAIN_RK3576("audio", 0x0, BIT(8), 0, BIT(8), 0x4, BIT(0), BIT(16), BIT(0), false),
- [RK3576_PD_PHP] = DOMAIN_RK3576("php", 0x0, BIT(9), 0, BIT(9), 0x0, BIT(15), BIT(15), BIT(15), false),
- [RK3576_PD_SUBPHP] = DOMAIN_RK3576("subphp", 0x0, BIT(10), 0, BIT(10), 0x0, 0, 0, 0, false),
- [RK3576_PD_VOP] = DOMAIN_RK3576("vop", 0x0, BIT(11), 0, BIT(11), 0x0, 0x6000, 0x6000, 0x6000, false),
- [RK3576_PD_VO1] = DOMAIN_RK3576("vo1", 0x0, BIT(14), 0, BIT(14), 0x0, BIT(12), BIT(12), 0x7000, false),
- [RK3576_PD_VO0] = DOMAIN_RK3576("vo0", 0x0, BIT(15), 0, BIT(15), 0x0, BIT(11), BIT(11), 0x6800, false),
- [RK3576_PD_USB] = DOMAIN_RK3576("usb", 0x4, BIT(0), 0, BIT(16), 0x0, BIT(10), BIT(10), 0x6400, true),
- [RK3576_PD_VI] = DOMAIN_RK3576("vi", 0x4, BIT(1), 0, BIT(17), 0x0, BIT(9), BIT(9), BIT(9), false),
- [RK3576_PD_VEPU0] = DOMAIN_RK3576("vepu0", 0x4, BIT(2), 0, BIT(18), 0x0, BIT(7), BIT(7), 0x280, false),
- [RK3576_PD_VEPU1] = DOMAIN_RK3576("vepu1", 0x4, BIT(3), 0, BIT(19), 0x0, BIT(8), BIT(8), BIT(8), false),
- [RK3576_PD_VDEC] = DOMAIN_RK3576("vdec", 0x4, BIT(4), 0, BIT(20), 0x0, BIT(6), BIT(6), BIT(6), false),
- [RK3576_PD_VPU] = DOMAIN_RK3576("vpu", 0x4, BIT(5), 0, BIT(21), 0x0, BIT(5), BIT(5), BIT(5), false),
- [RK3576_PD_NPUTOP] = DOMAIN_RK3576("nputop", 0x4, BIT(6), 0, BIT(22), 0x0, 0x18, 0x18, 0x18, false),
- [RK3576_PD_NPU0] = DOMAIN_RK3576("npu0", 0x4, BIT(7), 0, BIT(23), 0x0, BIT(1), BIT(1), 0x1a, false),
- [RK3576_PD_NPU1] = DOMAIN_RK3576("npu1", 0x4, BIT(8), 0, BIT(24), 0x0, BIT(2), BIT(2), 0x1c, false),
- [RK3576_PD_GPU] = DOMAIN_RK3576("gpu", 0x4, BIT(9), 0, BIT(25), 0x0, BIT(0), BIT(0), BIT(0), false),
+ /* name p_offset pwr status r_status r_offset req idle g_mask delay wakeup */
+ [RK3576_PD_NPU] = DOMAIN_RK3576("npu", 0x0, BIT(0), BIT(0), 0, 0x0, 0, 0, 0, 0, false),
+ [RK3576_PD_NVM] = DOMAIN_RK3576("nvm", 0x0, BIT(6), 0, BIT(6), 0x4, BIT(2), BIT(18), BIT(2), 0, false),
+ [RK3576_PD_SDGMAC] = DOMAIN_RK3576("sdgmac", 0x0, BIT(7), 0, BIT(7), 0x4, BIT(1), BIT(17), 0x6, 0, false),
+ [RK3576_PD_AUDIO] = DOMAIN_RK3576("audio", 0x0, BIT(8), 0, BIT(8), 0x4, BIT(0), BIT(16), BIT(0), 0, false),
+ [RK3576_PD_PHP] = DOMAIN_RK3576("php", 0x0, BIT(9), 0, BIT(9), 0x0, BIT(15), BIT(15), BIT(15), 0, false),
+ [RK3576_PD_SUBPHP] = DOMAIN_RK3576("subphp", 0x0, BIT(10), 0, BIT(10), 0x0, 0, 0, 0, 0, false),
+ [RK3576_PD_VOP] = DOMAIN_RK3576("vop", 0x0, BIT(11), 0, BIT(11), 0x0, 0x6000, 0x6000, 0x6000, 0, false),
+ [RK3576_PD_VO1] = DOMAIN_RK3576("vo1", 0x0, BIT(14), 0, BIT(14), 0x0, BIT(12), BIT(12), 0x7000, 0, false),
+ [RK3576_PD_VO0] = DOMAIN_RK3576("vo0", 0x0, BIT(15), 0, BIT(15), 0x0, BIT(11), BIT(11), 0x6800, 0, false),
+ [RK3576_PD_USB] = DOMAIN_RK3576("usb", 0x4, BIT(0), 0, BIT(16), 0x0, BIT(10), BIT(10), 0x6400, 0, true),
+ [RK3576_PD_VI] = DOMAIN_RK3576("vi", 0x4, BIT(1), 0, BIT(17), 0x0, BIT(9), BIT(9), BIT(9), 0, false),
+ [RK3576_PD_VEPU0] = DOMAIN_RK3576("vepu0", 0x4, BIT(2), 0, BIT(18), 0x0, BIT(7), BIT(7), 0x280, 0, false),
+ [RK3576_PD_VEPU1] = DOMAIN_RK3576("vepu1", 0x4, BIT(3), 0, BIT(19), 0x0, BIT(8), BIT(8), BIT(8), 0, false),
+ [RK3576_PD_VDEC] = DOMAIN_RK3576("vdec", 0x4, BIT(4), 0, BIT(20), 0x0, BIT(6), BIT(6), BIT(6), 0, false),
+ [RK3576_PD_VPU] = DOMAIN_RK3576("vpu", 0x4, BIT(5), 0, BIT(21), 0x0, BIT(5), BIT(5), BIT(5), 0, false),
+ [RK3576_PD_NPUTOP] = DOMAIN_RK3576("nputop", 0x4, BIT(6), 0, BIT(22), 0x0, 0x18, 0x18, 0x18, 15, false),
+ [RK3576_PD_NPU0] = DOMAIN_RK3576("npu0", 0x4, BIT(7), 0, BIT(23), 0x0, BIT(1), BIT(1), 0x1a, 15, false),
+ [RK3576_PD_NPU1] = DOMAIN_RK3576("npu1", 0x4, BIT(8), 0, BIT(24), 0x0, BIT(2), BIT(2), 0x1c, 15, false),
+ [RK3576_PD_GPU] = DOMAIN_RK3576("gpu", 0x4, BIT(9), 0, BIT(25), 0x0, BIT(0), BIT(0), BIT(0), 0, false),
};
static const struct rockchip_domain_info rk3588_pm_domains[] = {
--
2.43.0
next prev parent reply other threads:[~2026-07-31 4:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 4:35 [RFC PATCH v3 0/6] accel/rocket: RK3576 NPU (RKNN) enablement Jiaxing Hu
2026-07-31 4:35 ` [RFC PATCH v3 1/6] dt-bindings: npu: rockchip: add rockchip,rk3576-rknn-core Jiaxing Hu
2026-07-31 4:35 ` Jiaxing Hu [this message]
2026-07-31 4:35 ` [RFC PATCH v3 3/6] pmdomain/rockchip: cycle optional power-domain resets on power-on Jiaxing Hu
2026-07-31 4:35 ` [RFC PATCH v3 4/6] accel/rocket: add RK3576 NPU (RKNN) support Jiaxing Hu
2026-07-31 4:35 ` [RFC PATCH v3 5/6] arm64: dts: rockchip: rk3576: add NPU (RKNN) nodes Jiaxing Hu
2026-07-31 4:35 ` [RFC PATCH v3 6/6] arm64: dts: rockchip: rk3576-rock-4d: enable NPU Jiaxing Hu
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