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From: Tony Lindgren <tony@atomide.com>
To: linux-omap@vger.kernel.org
Cc: "Andrew F . Davis" <afd@ti.com>, Dave Gerlach <d-gerlach@ti.com>,
	Faiz Abbas <faiz_abbas@ti.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Grygorii Strashko <grygorii.strashko@ti.com>,
	Keerthy <j-keerthy@ti.com>, Nishanth Menon <nm@ti.com>,
	Peter Ujfalusi <peter.ujfalusi@ti.com>,
	Roger Quadros <rogerq@ti.com>, Suman Anna <s-anna@ti.com>,
	Tero Kristo <t-kristo@ti.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Santosh Shilimkar <ssantosh@kernel.org>,
	Stephen Boyd <sboyd@kernel.org>,
	linux-clk@vger.kernel.org, linux-remoteproc@vger.kernel.org
Subject: [PATCH 4/9] bus: ti-sysc: Support modules without control registers
Date: Mon, 26 Oct 2020 13:10:44 +0200	[thread overview]
Message-ID: <20201026111049.54835-5-tony@atomide.com> (raw)
In-Reply-To: <20201026111049.54835-1-tony@atomide.com>

Some modules like MPU have a powerdomain and functional clock but not
necessarily any control registers. Let's allow configuring interconnect
target modules with no control registers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/bus/ti-sysc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -850,8 +850,12 @@ static int sysc_ioremap(struct sysc *ddata)
  */
 static int sysc_map_and_check_registers(struct sysc *ddata)
 {
+	struct device_node *np = ddata->dev->of_node;
 	int error;
 
+	if (!of_get_property(np, "reg", NULL))
+		return 0;
+
 	error = sysc_parse_and_check_child_range(ddata);
 	if (error)
 		return error;
@@ -2906,6 +2910,9 @@ static int sysc_probe(struct platform_device *pdev)
 	if (!ddata)
 		return -ENOMEM;
 
+	ddata->offsets[SYSC_REVISION] = -ENODEV;
+	ddata->offsets[SYSC_SYSCONFIG] = -ENODEV;
+	ddata->offsets[SYSC_SYSSTATUS] = -ENODEV;
 	ddata->dev = &pdev->dev;
 	platform_set_drvdata(pdev, ddata);
 
-- 
2.29.1

WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: linux-omap@vger.kernel.org
Cc: Nishanth Menon <nm@ti.com>, Tero Kristo <t-kristo@ti.com>,
	Grygorii Strashko <grygorii.strashko@ti.com>,
	Dave Gerlach <d-gerlach@ti.com>, Stephen Boyd <sboyd@kernel.org>,
	Keerthy <j-keerthy@ti.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Santosh Shilimkar <ssantosh@kernel.org>,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Andrew F . Davis" <afd@ti.com>,
	Peter Ujfalusi <peter.ujfalusi@ti.com>,
	Faiz Abbas <faiz_abbas@ti.com>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	Roger Quadros <rogerq@ti.com>
Subject: [PATCH 4/9] bus: ti-sysc: Support modules without control registers
Date: Mon, 26 Oct 2020 13:10:44 +0200	[thread overview]
Message-ID: <20201026111049.54835-5-tony@atomide.com> (raw)
In-Reply-To: <20201026111049.54835-1-tony@atomide.com>

Some modules like MPU have a powerdomain and functional clock but not
necessarily any control registers. Let's allow configuring interconnect
target modules with no control registers.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/bus/ti-sysc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -850,8 +850,12 @@ static int sysc_ioremap(struct sysc *ddata)
  */
 static int sysc_map_and_check_registers(struct sysc *ddata)
 {
+	struct device_node *np = ddata->dev->of_node;
 	int error;
 
+	if (!of_get_property(np, "reg", NULL))
+		return 0;
+
 	error = sysc_parse_and_check_child_range(ddata);
 	if (error)
 		return error;
@@ -2906,6 +2910,9 @@ static int sysc_probe(struct platform_device *pdev)
 	if (!ddata)
 		return -ENOMEM;
 
+	ddata->offsets[SYSC_REVISION] = -ENODEV;
+	ddata->offsets[SYSC_SYSCONFIG] = -ENODEV;
+	ddata->offsets[SYSC_SYSSTATUS] = -ENODEV;
 	ddata->dev = &pdev->dev;
 	platform_set_drvdata(pdev, ddata);
 
-- 
2.29.1

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-10-26 11:12 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-26 11:10 [PATCH 0/9] Genpd related code changes to drop am335x pdata Tony Lindgren
2020-10-26 11:10 ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 1/9] ARM: OMAP2+: Check for inited flag Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 2/9] ARM: OMAP2+: Probe PRCM first to probe l4_wkup with simple-pm-bus Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 3/9] clk: ti: am33xx: Keep am3 l3 main clock always on for genpd Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` Tony Lindgren [this message]
2020-10-26 11:10   ` [PATCH 4/9] bus: ti-sysc: Support modules without control registers Tony Lindgren
2020-10-26 11:10 ` [PATCH 5/9] bus: ti-sysc: Implement GPMC debug quirk to drop platform data Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 6/9] soc: ti: omap-prm: Add pm_clk for genpd Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 7/9] soc: ti: omap-prm: am3: add genpd support for remaining PRM instances Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 8/9] soc: ti: pm33xx: Enable basic PM runtime support for genpd Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:10 ` [PATCH 9/9] remoteproc/wkup_m3: Use reset control driver if available Tony Lindgren
2020-10-26 11:10   ` Tony Lindgren
2020-10-26 11:35   ` Philipp Zabel
2020-10-26 11:35     ` Philipp Zabel
2020-10-26 13:02     ` Tony Lindgren
2020-10-26 13:02       ` Tony Lindgren
2020-10-26 13:13 ` [PATCH 0/9] Genpd related code changes to drop am335x pdata Tony Lindgren
2020-10-26 13:13   ` Tony Lindgren
  -- strict thread matches above, loose matches on Subject: below --
2020-11-10 11:20 [PATCHv2 " Tony Lindgren
2020-11-10 11:20 ` [PATCH 4/9] bus: ti-sysc: Support modules without control registers Tony Lindgren
2020-11-10 11:20   ` Tony Lindgren

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