From: Jianqun Xu <jay.xu@rock-chips.com> To: lgirdwood@gmail.com, broonie@kernel.org, ulf.hansson@linaro.org, lee.jones@linaro.org, zhangchangzhong@huawei.com, heiko@sntech.de Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Jianqun Xu <jay.xu@rock-chips.com> Subject: [PATCH 4/4] soc: rockchip: io-domain: do more thing about regulator notify Date: Mon, 16 Aug 2021 11:20:03 +0800 [thread overview] Message-ID: <20210816032003.1162779-5-jay.xu@rock-chips.com> (raw) In-Reply-To: <20210816032003.1162779-1-jay.xu@rock-chips.com> Do a fix to rockchip io-domain, follow this orders: * system running state -> io-domain vsel to 3.3V -> regulator_enable -> vsel change according to regulator voltage * system running state -> io-domain vsel to 3.3V -> regulator_disable Found on some Rockchip SoCs, the regulator enable or disable without care about the io-domain maybe caused soc damaged. Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> --- drivers/soc/rockchip/io-domain.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c index cf8182fc3642..af5fb11ad9a3 100644 --- a/drivers/soc/rockchip/io-domain.c +++ b/drivers/soc/rockchip/io-domain.c @@ -123,6 +123,12 @@ static int rockchip_iodomain_notify(struct notifier_block *nb, } else if (event & (REGULATOR_EVENT_VOLTAGE_CHANGE | REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE)) { uV = (unsigned long)data; + } else if (event & REGULATOR_EVENT_PRE_ENABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_PRE_DISABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_ENABLE) { + uV = (unsigned long)data; } else { return NOTIFY_OK; } -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Jianqun Xu <jay.xu@rock-chips.com> To: lgirdwood@gmail.com, broonie@kernel.org, ulf.hansson@linaro.org, lee.jones@linaro.org, zhangchangzhong@huawei.com, heiko@sntech.de Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Jianqun Xu <jay.xu@rock-chips.com> Subject: [PATCH 4/4] soc: rockchip: io-domain: do more thing about regulator notify Date: Mon, 16 Aug 2021 11:20:03 +0800 [thread overview] Message-ID: <20210816032003.1162779-5-jay.xu@rock-chips.com> (raw) In-Reply-To: <20210816032003.1162779-1-jay.xu@rock-chips.com> Do a fix to rockchip io-domain, follow this orders: * system running state -> io-domain vsel to 3.3V -> regulator_enable -> vsel change according to regulator voltage * system running state -> io-domain vsel to 3.3V -> regulator_disable Found on some Rockchip SoCs, the regulator enable or disable without care about the io-domain maybe caused soc damaged. Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> --- drivers/soc/rockchip/io-domain.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c index cf8182fc3642..af5fb11ad9a3 100644 --- a/drivers/soc/rockchip/io-domain.c +++ b/drivers/soc/rockchip/io-domain.c @@ -123,6 +123,12 @@ static int rockchip_iodomain_notify(struct notifier_block *nb, } else if (event & (REGULATOR_EVENT_VOLTAGE_CHANGE | REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE)) { uV = (unsigned long)data; + } else if (event & REGULATOR_EVENT_PRE_ENABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_PRE_DISABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_ENABLE) { + uV = (unsigned long)data; } else { return NOTIFY_OK; } -- 2.25.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip
next prev parent reply other threads:[~2021-08-16 3:20 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-16 3:19 [PATCH 0/4] regulator pre-enable Jianqun Xu 2021-08-16 3:19 ` Jianqun Xu 2021-08-16 3:20 ` [PATCH 1/4] regulator: add PRE_ENABLE event define Jianqun Xu 2021-08-16 3:20 ` Jianqun Xu 2021-08-16 3:20 ` [PATCH 2/4] regulator: core: notify regulator enable with the voltage value Jianqun Xu 2021-08-16 3:20 ` Jianqun Xu 2021-08-16 12:00 ` Mark Brown 2021-08-16 12:00 ` Mark Brown 2021-08-17 3:17 ` jay.xu 2021-08-17 3:23 ` jay.xu 2021-08-16 3:20 ` [PATCH 3/4] regulator: core: add pre-enable event notify to regulator Jianqun Xu 2021-08-16 3:20 ` Jianqun Xu 2021-08-16 3:20 ` Jianqun Xu [this message] 2021-08-16 3:20 ` [PATCH 4/4] soc: rockchip: io-domain: do more thing about regulator notify Jianqun Xu 2021-08-16 12:39 ` Ulf Hansson 2021-08-16 12:39 ` Ulf Hansson
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