diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.4/006-mfd-qcom_rpm-Handle-message-RAM-clock.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.4/006-mfd-qcom_rpm-Handle-message-RAM-clock.patch | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/target/linux/ipq806x/patches-4.4/006-mfd-qcom_rpm-Handle-message-RAM-clock.patch b/target/linux/ipq806x/patches-4.4/006-mfd-qcom_rpm-Handle-message-RAM-clock.patch deleted file mode 100644 index 96b768d97c..0000000000 --- a/target/linux/ipq806x/patches-4.4/006-mfd-qcom_rpm-Handle-message-RAM-clock.patch +++ /dev/null @@ -1,90 +0,0 @@ -From 3526403353c2a1b94c3181f900582626d23c339b Mon Sep 17 00:00:00 2001 -From: Linus Walleij <linus.walleij@linaro.org> -Date: Thu, 18 Aug 2016 20:40:45 +0200 -Subject: mfd: qcom_rpm: Handle message RAM clock -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -The MSM8660, APQ8060, IPQ806x and MSM8960 have a GCC clock -to the message RAM used by the RPM. This needs to be enabled -for messages to pass through. This is a crude solution that -simply prepare/enable at probe() and disable/unprepare -at remove(). More elaborate PM is probably possible to -add later. - -The construction uses IS_ERR() to gracefully handle the -platforms that do not provide a message RAM clock. It will -bail out of probe only if the clock is hitting a probe -deferral situation. - -Of course this requires the proper device tree set-up: - -rpm: rpm@104000 { - compatible = "qcom,rpm-msm8660"; - clocks = <&gcc RPM_MSG_RAM_H_CLK>; - clock-names = "ram"; - ... -}; - -I have provided this in the MSM8660 device tree, and will -provide patches for the other targets. - -Cc: Björn Andersson <bjorn.andersson@linaro.org> -Signed-off-by: Linus Walleij <linus.walleij@linaro.org> -Signed-off-by: Lee Jones <lee.jones@linaro.org> ---- - drivers/mfd/qcom_rpm.c | 20 ++++++++++++++++++++ - 1 file changed, 20 insertions(+) - ---- a/drivers/mfd/qcom_rpm.c -+++ b/drivers/mfd/qcom_rpm.c -@@ -21,6 +21,7 @@ - #include <linux/mfd/qcom_rpm.h> - #include <linux/mfd/syscon.h> - #include <linux/regmap.h> -+#include <linux/clk.h> - - #include <dt-bindings/mfd/qcom-rpm.h> - -@@ -48,6 +49,7 @@ struct qcom_rpm { - struct regmap *ipc_regmap; - unsigned ipc_offset; - unsigned ipc_bit; -+ struct clk *ramclk; - - struct completion ack; - struct mutex lock; -@@ -503,6 +505,20 @@ static int qcom_rpm_probe(struct platfor - mutex_init(&rpm->lock); - init_completion(&rpm->ack); - -+ /* Enable message RAM clock */ -+ rpm->ramclk = devm_clk_get(&pdev->dev, "ram"); -+ if (IS_ERR(rpm->ramclk)) { -+ ret = PTR_ERR(rpm->ramclk); -+ if (ret == -EPROBE_DEFER) -+ return ret; -+ /* -+ * Fall through in all other cases, as the clock is -+ * optional. (Does not exist on all platforms.) -+ */ -+ rpm->ramclk = NULL; -+ } -+ clk_prepare_enable(rpm->ramclk); /* Accepts NULL */ -+ - irq_ack = platform_get_irq_byname(pdev, "ack"); - if (irq_ack < 0) { - dev_err(&pdev->dev, "required ack interrupt missing\n"); -@@ -621,7 +637,11 @@ static int qcom_rpm_probe(struct platfor - - static int qcom_rpm_remove(struct platform_device *pdev) - { -+ struct qcom_rpm *rpm = dev_get_drvdata(&pdev->dev); -+ - of_platform_depopulate(&pdev->dev); -+ clk_disable_unprepare(rpm->ramclk); -+ - return 0; - } - |