* [PATCH 1/2] add driver for Tegra124 memory controller
@ 2017-03-19 18:13 Lucas Stach
2017-03-19 18:13 ` [PATCH 2/2] ARM: tegra: enable Tegra124 memory controller driver in defconfig Lucas Stach
2017-03-20 7:41 ` [PATCH 1/2] add driver for Tegra124 memory controller Sascha Hauer
0 siblings, 2 replies; 3+ messages in thread
From: Lucas Stach @ 2017-03-19 18:13 UTC (permalink / raw)
To: barebox
This driver performs the required initialization to get the GPU
into a functional state, so it can be used when the OS is running.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
---
drivers/Kconfig | 1 +
drivers/Makefile | 1 +
drivers/memory/Kconfig | 11 +++++++
drivers/memory/Makefile | 1 +
drivers/memory/mc-tegra124.c | 75 ++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 89 insertions(+)
create mode 100644 drivers/memory/Kconfig
create mode 100644 drivers/memory/Makefile
create mode 100644 drivers/memory/mc-tegra124.c
diff --git a/drivers/Kconfig b/drivers/Kconfig
index bf31115..ab9afb5 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -34,5 +34,6 @@ source "drivers/rtc/Kconfig"
source "drivers/firmware/Kconfig"
source "drivers/phy/Kconfig"
source "drivers/crypto/Kconfig"
+source "drivers/memory/Kconfig"
endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
index 0fadf4e..a1d2d23 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -35,3 +35,4 @@ obj-$(CONFIG_GENERIC_PHY) += phy/
obj-$(CONFIG_HAB) += hab/
obj-$(CONFIG_CRYPTO_HW) += crypto/
obj-$(CONFIG_AIODEV) += aiodev/
+obj-y += memory/
diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
new file mode 100644
index 0000000..39fd644
--- /dev/null
+++ b/drivers/memory/Kconfig
@@ -0,0 +1,11 @@
+menu "Memory controller drivers"
+
+config MC_TEGRA124
+ bool "Support for Tegra124 memory controller"
+ depends on ARCH_TEGRA
+ help
+ Say yes here to include the driver for the memory controller found on
+ the Tegra124 SoC. This driver performs the necessary initialization
+ to provide a function GPU when the OS is running.
+
+endmenu
diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
new file mode 100644
index 0000000..bd5ace9
--- /dev/null
+++ b/drivers/memory/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MC_TEGRA124) += mc-tegra124.o
diff --git a/drivers/memory/mc-tegra124.c b/drivers/memory/mc-tegra124.c
new file mode 100644
index 0000000..a8d1609
--- /dev/null
+++ b/drivers/memory/mc-tegra124.c
@@ -0,0 +1,75 @@
+/* *
+ * Copyright (C) 2017 Lucas Stach <l.stach@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <of.h>
+
+#define MC_VIDEO_PROTECT_SIZE_MB 0x64c
+#define MC_VIDEO_PROTECT_REG_CTRL 0x650
+#define MC_VIDEO_PROTECT_REG_WR_DIS (1 << 0)
+
+static int tegra124_mc_of_fixup(struct device_node *root, void *context)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(root, NULL, "nvidia,gk20a");
+ if (np)
+ of_device_enable(np);
+
+ return 0;
+}
+
+static int tegra124_mc_probe(struct device_d *dev)
+{
+ struct resource *iores;
+ void __iomem *base;
+
+ iores = dev_request_mem_resource(dev, 0);
+ if (IS_ERR(iores)) {
+ dev_err(dev, "could not get memory region\n");
+ return PTR_ERR(iores);
+ }
+ base = IOMEM(iores->start);
+
+ /* disable video protect region */
+ writel(0 , base + MC_VIDEO_PROTECT_SIZE_MB);
+ writel(MC_VIDEO_PROTECT_REG_WR_DIS, base + MC_VIDEO_PROTECT_REG_CTRL);
+ readl(base + MC_VIDEO_PROTECT_REG_CTRL); /* readback to flush */
+
+ return of_register_fixup(tegra124_mc_of_fixup, NULL);
+}
+
+static __maybe_unused struct of_device_id tegra124_mc_dt_ids[] = {
+ {
+ .compatible = "nvidia,tegra124-mc",
+ }, {
+ /* sentinel */
+ },
+};
+
+static struct driver_d tegra124_mc_driver = {
+ .name = "tegra124-mc",
+ .of_compatible = DRV_OF_COMPAT(tegra124_mc_dt_ids),
+ .probe = tegra124_mc_probe,
+};
+
+static int __init tegra124_mc_init(void)
+{
+ return platform_driver_register(&tegra124_mc_driver);
+}
+device_initcall(tegra124_mc_init);
--
2.9.3
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 2/2] ARM: tegra: enable Tegra124 memory controller driver in defconfig
2017-03-19 18:13 [PATCH 1/2] add driver for Tegra124 memory controller Lucas Stach
@ 2017-03-19 18:13 ` Lucas Stach
2017-03-20 7:41 ` [PATCH 1/2] add driver for Tegra124 memory controller Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Lucas Stach @ 2017-03-19 18:13 UTC (permalink / raw)
To: barebox
Signed-off-by: Lucas Stach <dev@lynxeye.de>
---
arch/arm/configs/tegra_v7_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/configs/tegra_v7_defconfig b/arch/arm/configs/tegra_v7_defconfig
index 66534a7..65b9807 100644
--- a/arch/arm/configs/tegra_v7_defconfig
+++ b/arch/arm/configs/tegra_v7_defconfig
@@ -46,6 +46,7 @@ CONFIG_MCI=y
CONFIG_MCI_MMC_BOOT_PARTITIONS=y
CONFIG_MCI_TEGRA=y
CONFIG_PCI_TEGRA=y
+CONFIG_MC_TEGRA124=y
CONFIG_FS_EXT4=y
CONFIG_FS_TFTP=y
CONFIG_FS_NFS=y
--
2.9.3
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] add driver for Tegra124 memory controller
2017-03-19 18:13 [PATCH 1/2] add driver for Tegra124 memory controller Lucas Stach
2017-03-19 18:13 ` [PATCH 2/2] ARM: tegra: enable Tegra124 memory controller driver in defconfig Lucas Stach
@ 2017-03-20 7:41 ` Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Sascha Hauer @ 2017-03-20 7:41 UTC (permalink / raw)
To: Lucas Stach; +Cc: barebox
On Sun, Mar 19, 2017 at 07:13:52PM +0100, Lucas Stach wrote:
> This driver performs the required initialization to get the GPU
> into a functional state, so it can be used when the OS is running.
>
> Signed-off-by: Lucas Stach <dev@lynxeye.de>
> ---
> drivers/Kconfig | 1 +
> drivers/Makefile | 1 +
> drivers/memory/Kconfig | 11 +++++++
> drivers/memory/Makefile | 1 +
> drivers/memory/mc-tegra124.c | 75 ++++++++++++++++++++++++++++++++++++++++++++
> 5 files changed, 89 insertions(+)
> create mode 100644 drivers/memory/Kconfig
> create mode 100644 drivers/memory/Makefile
> create mode 100644 drivers/memory/mc-tegra124.c
Applied, thanks
Sascha
>
> diff --git a/drivers/Kconfig b/drivers/Kconfig
> index bf31115..ab9afb5 100644
> --- a/drivers/Kconfig
> +++ b/drivers/Kconfig
> @@ -34,5 +34,6 @@ source "drivers/rtc/Kconfig"
> source "drivers/firmware/Kconfig"
> source "drivers/phy/Kconfig"
> source "drivers/crypto/Kconfig"
> +source "drivers/memory/Kconfig"
>
> endmenu
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 0fadf4e..a1d2d23 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -35,3 +35,4 @@ obj-$(CONFIG_GENERIC_PHY) += phy/
> obj-$(CONFIG_HAB) += hab/
> obj-$(CONFIG_CRYPTO_HW) += crypto/
> obj-$(CONFIG_AIODEV) += aiodev/
> +obj-y += memory/
> diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
> new file mode 100644
> index 0000000..39fd644
> --- /dev/null
> +++ b/drivers/memory/Kconfig
> @@ -0,0 +1,11 @@
> +menu "Memory controller drivers"
> +
> +config MC_TEGRA124
> + bool "Support for Tegra124 memory controller"
> + depends on ARCH_TEGRA
> + help
> + Say yes here to include the driver for the memory controller found on
> + the Tegra124 SoC. This driver performs the necessary initialization
> + to provide a function GPU when the OS is running.
> +
> +endmenu
> diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
> new file mode 100644
> index 0000000..bd5ace9
> --- /dev/null
> +++ b/drivers/memory/Makefile
> @@ -0,0 +1 @@
> +obj-$(CONFIG_MC_TEGRA124) += mc-tegra124.o
> diff --git a/drivers/memory/mc-tegra124.c b/drivers/memory/mc-tegra124.c
> new file mode 100644
> index 0000000..a8d1609
> --- /dev/null
> +++ b/drivers/memory/mc-tegra124.c
> @@ -0,0 +1,75 @@
> +/* *
> + * Copyright (C) 2017 Lucas Stach <l.stach@pengutronix.de>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> + * more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#include <common.h>
> +#include <init.h>
> +#include <io.h>
> +#include <of.h>
> +
> +#define MC_VIDEO_PROTECT_SIZE_MB 0x64c
> +#define MC_VIDEO_PROTECT_REG_CTRL 0x650
> +#define MC_VIDEO_PROTECT_REG_WR_DIS (1 << 0)
> +
> +static int tegra124_mc_of_fixup(struct device_node *root, void *context)
> +{
> + struct device_node *np;
> +
> + np = of_find_compatible_node(root, NULL, "nvidia,gk20a");
> + if (np)
> + of_device_enable(np);
> +
> + return 0;
> +}
> +
> +static int tegra124_mc_probe(struct device_d *dev)
> +{
> + struct resource *iores;
> + void __iomem *base;
> +
> + iores = dev_request_mem_resource(dev, 0);
> + if (IS_ERR(iores)) {
> + dev_err(dev, "could not get memory region\n");
> + return PTR_ERR(iores);
> + }
> + base = IOMEM(iores->start);
> +
> + /* disable video protect region */
> + writel(0 , base + MC_VIDEO_PROTECT_SIZE_MB);
> + writel(MC_VIDEO_PROTECT_REG_WR_DIS, base + MC_VIDEO_PROTECT_REG_CTRL);
> + readl(base + MC_VIDEO_PROTECT_REG_CTRL); /* readback to flush */
> +
> + return of_register_fixup(tegra124_mc_of_fixup, NULL);
> +}
> +
> +static __maybe_unused struct of_device_id tegra124_mc_dt_ids[] = {
> + {
> + .compatible = "nvidia,tegra124-mc",
> + }, {
> + /* sentinel */
> + },
> +};
> +
> +static struct driver_d tegra124_mc_driver = {
> + .name = "tegra124-mc",
> + .of_compatible = DRV_OF_COMPAT(tegra124_mc_dt_ids),
> + .probe = tegra124_mc_probe,
> +};
> +
> +static int __init tegra124_mc_init(void)
> +{
> + return platform_driver_register(&tegra124_mc_driver);
> +}
> +device_initcall(tegra124_mc_init);
> --
> 2.9.3
>
>
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2017-03-20 7:42 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-03-19 18:13 [PATCH 1/2] add driver for Tegra124 memory controller Lucas Stach
2017-03-19 18:13 ` [PATCH 2/2] ARM: tegra: enable Tegra124 memory controller driver in defconfig Lucas Stach
2017-03-20 7:41 ` [PATCH 1/2] add driver for Tegra124 memory controller Sascha Hauer
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